P22xx codes: Fuel and air metering (injector circuit)
256 powertrain trouble codes from P2200 to P22FF. They mostly involve the nox sensor, oxygen sensor wiring, ECM and alternative fuel injector.
All P22xx codes
249 of these codes usually turn on the check engine light; 137 can often be fixed at home.
| Code | Meaning | Difficulty |
|---|---|---|
| P2200 | NOx Sensor Circuit (Bank 1 Sensor 1) | Medium |
| P2201 | NOx Sensor Circuit Range/Performance (Bank 1 Sensor 1) | Medium |
| P2202 | NOx Sensor Circuit Low (Bank 1 Sensor 1) | Medium |
| P2203 | NOx Sensor Circuit High (Bank 1 Sensor 1) | Medium |
| P2204 | NOx Sensor Circuit Intermittent (Bank 1 Sensor 1) | Medium |
| P2205 | NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 1) | Medium |
| P2206 | NOx Sensor Heater Control Circuit Low (Bank 1 Sensor 1) | Medium |
| P2207 | NOx Sensor Heater Control Circuit High (Bank 1 Sensor 1) | Medium |
| P2208 | NOx Sensor Heater Sense Circuit (Bank 1 Sensor 1) | Medium |
| P2209 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 1 Sensor 1) | Medium |
| P220A | NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1) | Medium |
| P220B | NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 2) | Medium |
| P220C | NOx Sensor Supply Voltage Circuit (Bank 2 Sensor 1) | Medium |
| P220D | NOx Sensor Supply Voltage Circuit (Bank 2 Sensor 2) | Medium |
| P220E | NOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 1) | Medium |
| P220F | NOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 2) | Medium |
| P2210 | NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 1) | Medium |
| P2211 | NOx Sensor Heater Sense Circuit High (Bank 1 Sensor 1) | Medium |
| P2212 | NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 1) | Medium |
| P2213 | NOx Sensor Circuit (Bank 2) | Medium |
| P2214 | NOx Sensor Circuit Range/Performance (Bank 2) | Medium |
| P2215 | NOx Sensor Circuit Low (Bank 2) | Medium |
| P2216 | NOx Sensor Circuit High (Bank 2) | Medium |
| P2217 | NOx Sensor Circuit Intermittent (Bank 2) | Medium |
| P2218 | NOx Sensor Heater Control Circuit/Open (Bank 2) | Medium |
| P2219 | NOx Sensor Heater Control Circuit Low (Bank 2) | Medium |
| P221A | NOx Sensor 1/2 Correlation (Bank 1) | Hard |
| P221B | NOx Sensor 1/2 Correlation (Bank 2) | Hard |
| P221C | Reductant Heater B Current Too Low | Medium |
| P221D | Reductant Heater B Current Too High | Medium |
| P221E | Reductant Heater C Current Too Low | Hard |
| P221F | Reductant Heater C Current Too High | Hard |
| P2220 | NOx Sensor Heater Control Circuit High (Bank 2) | Medium |
| P2221 | NOx Sensor Heater Sense Circuit (Bank 2) | Medium |
| P2222 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 2) | Medium |
| P2223 | NOx Sensor Heater Sense Circuit Low (Bank 2) | Medium |
| P2224 | NOx Sensor Heater Sense Circuit High (Bank 2) | Medium |
| P2225 | NOx Sensor Heater Sense Circuit Intermittent (Bank 2) | Medium |
| P2226 | Barometric Pressure Sensor A Circuit | Medium |
| P2227 | Barometric Pressure Sensor A Circuit Range/Performance | Medium |
| P2228 | Barometric Pressure Sensor A Circuit Low | Medium |
| P2229 | Barometric Pressure Sensor A Circuit High | Medium |
| P222A | Barometric Pressure Sensor B Circuit | Medium |
| P222B | Barometric Pressure Sensor B Circuit Range/Performance | Medium |
| P222C | Barometric Pressure Sensor B Circuit Low | Medium |
| P222D | Barometric Pressure Sensor B Circuit High | Medium |
| P222E | Barometric Pressure Sensor B Circuit Intermittent/Erratic | Medium |
| P222F | Barometric Pressure Sensor A/B Correlation | Medium |
| P2230 | Barometric Pressure Sensor A Circuit Intermittent/Erratic | Medium |
| P2231 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 1) | Medium |
| P2232 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 2) | Medium |
| P2233 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 3) | Medium |
| P2234 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 1) | Medium |
| P2235 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 2) | Medium |
| P2236 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 3) | Medium |
| P2237 | O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 1) | Medium |
| P2238 | O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 1) | Medium |
| P2239 | O2 Sensor Positive Current Control Circuit High (Bank 1 Sensor 1) | Medium |
| P223A | Reductant Heater E Control Circuit | Hard |
| P223B | Reductant Heater F Control Circuit | Hard |
| P223C | O2 Sensor Pumping Current Range/Performance (Bank 1) | Medium |
| P223D | O2 Sensor Pumping Current Range/Performance (Bank 2) | Medium |
| P223E | O2 Sensor Reference Resistance Out Of Range (Bank 1) | Medium |
| P223F | O2 Sensor Reference Resistance Out Of Range (Bank 2) | Medium |
| P2240 | O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 1) | Medium |
| P2241 | O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 1) | Medium |
| P2242 | O2 Sensor Positive Current Control Circuit High (Bank 2 Sensor 1) | Medium |
| P2243 | O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1) | Medium |
| P2244 | O2 Sensor Reference Voltage Performance (Bank 1 Sensor 1) | Medium |
| P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) | Medium |
| P2246 | O2 Sensor Reference Voltage Circuit High (Bank 1 Sensor 1) | Medium |
| P2247 | O2 Sensor Reference Voltage Circuit/Open (Bank 2 Sensor 1) | Medium |
| P2248 | O2 Sensor Reference Voltage Performance (Bank 2 Sensor 1) | Medium |
| P2249 | O2 Sensor Reference Voltage Circuit Low (Bank 2 Sensor 1) | Medium |
| P224A | NOx Sensor Heater Resistance (Bank 1 Sensor 1) | Medium |
| P224B | NOx Sensor Heater Resistance (Bank 1 Sensor 2) | Medium |
| P224C | Alternative Fuel Tank Shutoff Valve A Control Circuit/Open | Hard |
| P224D | Alternative Fuel Tank Shutoff Valve A Control Circuit Performance/Stuck Off | Hard |
| P224E | Alternative Fuel Tank Shutoff Valve A Control Circuit Low | Hard |
| P224F | Alternative Fuel Tank Shutoff Valve A Control Circuit High | Hard |
| P2250 | O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 1) | Medium |
| P2251 | O2 Sensor Negative Current Control Circuit/Open (Bank 1 Sensor 1) | Medium |
| P2252 | O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 1) | Medium |
| P2253 | O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 1) | Medium |
| P2254 | O2 Sensor Negative Current Control Circuit/Open (Bank 2 Sensor 1) | Medium |
| P2255 | O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1) | Medium |
| P2256 | O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 1) | Medium |
| P2257 | AIR System Control A Circuit Low | Medium |
| P2258 | AIR System Control A Circuit High | Medium |
| P2259 | AIR System Control B Circuit Low | Medium |
| P225A | NOx Sensor Calibration Memory (Bank 1 Sensor 1) | Medium |
| P225B | NOx Sensor Calibration Memory (Bank 1 Sensor 2) | Medium |
| P225C | NOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 1) | Hard |
| P225D | NOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 1) | Hard |
| P225E | NOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 2) | Hard |
| P225F | NOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 2) | Medium |
| P2260 | AIR System Control B Circuit High | Medium |
| P2261 | Turbocharger/Supercharger Bypass Valve A - Mechanical | Medium |
| P2262 | Turbocharger/Supercharger Boost Pressure A Not Detected - Mechanical | Medium |
| P2263 | Turbocharger/Supercharger A Boost System Performance | Medium |
| P2264 | Water in Fuel Sensor A Circuit | Easy |
| P2265 | Water in Fuel Sensor A Circuit Range/Performance | Easy |
| P2266 | Water in Fuel Sensor A Circuit Low | Easy |
| P2267 | Water in Fuel Sensor A Circuit High | Easy |
| P2268 | Water in Fuel Sensor A Circuit Intermittent | Easy |
| P2269 | Water in Fuel Condition - Sensor A | Easy |
| P226A | Water in Fuel Lamp Control Circuit | Easy |
| P226B | Turbocharger/Supercharger A Boost Pressure Too High - Mechanical | Hard |
| P226C | Turbocharger Boost Control A Slow Response | Hard |
| P226D | Particulate Filter Deteriorated/Missing Substrate (Bank 1) | Hard |
| P226E | Particulate Filter Deteriorated/Missing Substrate (Bank 2) | Hard |
| P226F | Turbocharger Boost Control B Slow Response | Hard |
| P2270 | O2 Sensor Signal Biased/Stuck Lean (Bank 1, Sensor 2) | Medium |
| P2271 | O2 Sensor Signal Biased/Stuck Rich (Bank 1, Sensor 2) | Medium |
| P2272 | O2 Sensor Signal Biased/Stuck Lean (Bank 2, Sensor 2) | Medium |
| P2273 | O2 Sensor Signal Biased/Stuck Rich (Bank 2, Sensor 2) | Medium |
| P2274 | O2 Sensor Signal Biased/Stuck Lean (Bank 1, Sensor 3) | Medium |
| P2275 | O2 Sensor Signal Biased/Stuck Rich (Bank 1, Sensor 3) | Medium |
| P2276 | O2 Sensor Signal Biased/Stuck Lean (Bank 2, Sensor 3) | Medium |
| P2277 | O2 Sensor Signal Biased/Stuck Rich (Bank 2, Sensor 3) | Medium |
| P2278 | O2 Sensor Signals Swapped Bank 1 Sensor 3/Bank 2 Sensor 3 | Easy |
| P2279 | Intake Air System Leak (Bank 1) | Medium |
| P227A | Barometric Pressure Sensor C Circuit | Medium |
| P227B | Barometric Pressure Sensor C Circuit Range/Performance | Medium |
| P227C | Barometric Pressure Sensor C Circuit Low | Medium |
| P227D | Barometric Pressure Sensor C Circuit High | Medium |
| P227E | Barometric Pressure Sensor C Circuit Intermittent/Erratic | Medium |
| P227F | Air Flow Restriction/Air Leak Between Air Filter and MAF (Bank 2) | Easy |
| P2280 | Air Flow Restriction/Air Leak Between Air Filter and MAF (Bank 1) | Easy |
| P2281 | Air Leak Between MAF and Throttle Body | Medium |
| P2282 | Air Leak Between Throttle Body and Intake Valves | Medium |
| P2283 | Injector Control Pressure Sensor Circuit | Medium |
| P2284 | Injector Control Pressure Sensor Circuit Range/Performance | Medium |
| P2285 | Injector Control Pressure Sensor Circuit Low | Medium |
| P2286 | Injector Control Pressure Sensor Circuit High | Medium |
| P2287 | Injector Control Pressure Sensor Circuit Intermittent | Medium |
| P2288 | Injector Control Pressure Too High | Hard |
| P2289 | Injector Control Pressure Too High - Engine Off | Medium |
| P228A | Fuel Pressure Regulator A - Forced Engine Shutdown | Hard |
| P228B | Fuel Pressure Regulator B - Forced Engine Shutdown | Hard |
| P228C | Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too Low | Hard |
| P228D | Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High | Hard |
| P228E | Fuel Pressure Regulator A Exceeded Learning Limits - Too Low | Hard |
| P228F | Fuel Pressure Regulator A Exceeded Learning Limits - Too High | Hard |
| P2290 | Injector Control Pressure Too Low | Hard |
| P2291 | Injector Control Pressure Too Low - Engine Cranking | Hard |
| P2292 | Injector Control Pressure Erratic | Hard |
| P2293 | Fuel Pressure Regulator B Performance | Hard |
| P2294 | Fuel Pressure Regulator B Control Circuit/Open | Medium |
| P2295 | Fuel Pressure Regulator B Control Circuit Low | Medium |
| P2296 | Fuel Pressure Regulator B Control Circuit High | Medium |
| P2297 | O2 Sensor Out of Range During Deceleration (Bank 1 Sensor 1) | Easy |
| P2298 | O2 Sensor Out of Range During Deceleration (Bank 2 Sensor 1) | Easy |
| P2299 | Brake Pedal Position/Accelerator Pedal Position Incompatible | Easy |
| P229A | Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too Low | Hard |
| P229B | Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too High | Hard |
| P229C | Fuel Pressure Regulator B Exceeded Learning Limits - Too Low | Hard |
| P229D | Fuel Pressure Regulator B Exceeded Learning Limits - Too High | Hard |
| P229E | NOx Sensor Circuit (Bank 1 Sensor 2) | Medium |
| P229F | NOx Sensor Circuit Range/Performance (Bank 1 Sensor 2) | Medium |
| P22A0 | NOx Sensor Circuit Low (Bank 1 Sensor 2) | Medium |
| P22A1 | NOx Sensor Circuit High (Bank 1 Sensor 2) | Medium |
| P22A2 | NOx Sensor Circuit Intermittent (Bank 1 Sensor 2) | Medium |
| P22A3 | NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 2) | Medium |
| P22A4 | NOx Sensor Heater Control Circuit Low (Bank 1 Sensor 2) | Medium |
| P22A5 | NOx Sensor Heater Control Circuit High (Bank 1 Sensor 2) | Medium |
| P22A6 | NOx Sensor Heater Sense Circuit (Bank 1 Sensor 2) | Medium |
| P22A7 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 1 Sensor 2) | Medium |
| P22A8 | NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 2) | Medium |
| P22A9 | NOx Sensor Heater Sense Circuit High (Bank 1 Sensor 2) | Medium |
| P22AA | NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 2) | Medium |
| P22AB | O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 2) | Medium |
| P22AC | O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 2) | Medium |
| P22AD | O2 Sensor Positive Current Control Circuit High (Bank 1 Sensor 2) | Medium |
| P22AE | O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 2) | Medium |
| P22AF | O2 Sensor Reference Voltage Performance (Bank 1 Sensor 2) | Medium |
| P22B0 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 2) | Medium |
| P22B1 | O2 Sensor Reference Voltage Circuit High (Bank 1 Sensor 2) | Medium |
| P22B2 | O2 Sensor Negative Current Control Circuit/Open (Bank 1 Sensor 2) | Medium |
| P22B3 | O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 2) | Medium |
| P22B4 | O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 2) | Medium |
| P22B5 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 2) | Medium |
| P22B6 | O2 Sensor Pumping Current Trim Circuit Low (Bank 1 Sensor 2) | Medium |
| P22B7 | O2 Sensor Pumping Current Trim Circuit High (Bank 1 Sensor 2) | Medium |
| P22B8 | O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 2) | Medium |
| P22B9 | O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 2) | Medium |
| P22BA | O2 Sensor Positive Current Control Circuit High (Bank 2 Sensor 2) | Medium |
| P22BB | O2 Sensor Reference Voltage Circuit/Open (Bank 2 Sensor 2) | Medium |
| P22BC | O2 Sensor Reference Voltage Performance (Bank 2 Sensor 2) | Medium |
| P22BD | O2 Sensor Reference Voltage Circuit Low (Bank 2 Sensor 2) | Medium |
| P22BE | O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 2) | Medium |
| P22BF | O2 Sensor Negative Current Control Circuit/Open (Bank 2 Sensor 2) | Medium |
| P22C0 | O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 2) | Medium |
| P22C1 | O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 2) | Medium |
| P22C2 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 2 Sensor 2) | Medium |
| P22C3 | O2 Sensor Pumping Current Trim Circuit Low (Bank 2 Sensor 2) | Medium |
| P22C4 | O2 Sensor Pumping Current Trim Circuit High (Bank 2 Sensor 2) | Medium |
| P22C5 | Turbocharger Compressor Outlet Valve Control Circuit/Open | Medium |
| P22C6 | Turbocharger Compressor Outlet Valve Control Circuit Low | Medium |
| P22C7 | Turbocharger Compressor Outlet Valve Control Circuit High | Medium |
| P22C8 | Turbocharger Compressor Outlet Valve Stuck Open | Medium |
| P22C9 | Turbocharger Compressor Outlet Valve Stuck Closed | Medium |
| P22CA | Turbocharger Compressor Outlet Switching Valve Control Circuit/Open | Easy |
| P22CB | Turbocharger Compressor Outlet Switching Valve Control Circuit Low | Easy |
| P22CC | Turbocharger Compressor Outlet Switching Valve Control Circuit High | Easy |
| P22CD | Turbocharger Compressor Outlet Switching Valve Stuck Open | Medium |
| P22CE | Turbocharger Compressor Outlet Switching Valve Stuck Closed | Medium |
| P22CF | Turbocharger Turbine Inlet Valve Control Circuit/Open | Medium |
| P22D0 | Turbocharger Turbine Inlet Valve Control Circuit Low | Medium |
| P22D1 | Turbocharger Turbine Inlet Valve Control Circuit High | Medium |
| P22D2 | Turbocharger Turbine Inlet Valve Stuck Open | Hard |
| P22D3 | Turbocharger Turbine Inlet Valve Stuck Closed | Hard |
| P22D4 | Turbocharger Turbine Inlet Valve Position Sensor Circuit | Medium |
| P22D5 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Range/Performance | Medium |
| P22D6 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Low | Medium |
| P22D7 | Turbocharger Turbine Inlet Valve Position Sensor Circuit High | Medium |
| P22D8 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Intermittent/Erratic | Medium |
| P22D9 | Cylinder 1 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22DA | Cylinder 1 Alternative Fuel Injector Control Circuit Low | Medium |
| P22DB | Cylinder 1 Alternative Fuel Injector Control Circuit High | Medium |
| P22DC | Cylinder 1 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22DD | Cylinder 2 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22DE | Cylinder 2 Alternative Fuel Injector Control Circuit Low | Medium |
| P22DF | Cylinder 2 Alternative Fuel Injector Control Circuit High | Medium |
| P22E0 | Cylinder 2 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22E1 | Cylinder 3 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22E2 | Cylinder 3 Alternative Fuel Injector Control Circuit Low | Medium |
| P22E3 | Cylinder 3 Alternative Fuel Injector Control Circuit High | Medium |
| P22E4 | Cylinder 3 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22E5 | Cylinder 4 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22E6 | Cylinder 4 Alternative Fuel Injector Control Circuit Low | Medium |
| P22E7 | Cylinder 4 Alternative Fuel Injector Control Circuit High | Medium |
| P22E8 | Cylinder 4 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22E9 | Cylinder 5 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22EA | Cylinder 5 Alternative Fuel Injector Control Circuit Low | Medium |
| P22EB | Cylinder 5 Alternative Fuel Injector Control Circuit High | Medium |
| P22EC | Cylinder 5 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22ED | Cylinder 6 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22EE | Cylinder 6 Alternative Fuel Injector Control Circuit Low | Medium |
| P22EF | Cylinder 6 Alternative Fuel Injector Control Circuit High | Medium |
| P22F0 | Cylinder 6 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22F1 | Cylinder 7 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22F2 | Cylinder 7 Alternative Fuel Injector Control Circuit Low | Medium |
| P22F3 | Cylinder 7 Alternative Fuel Injector Control Circuit High | Medium |
| P22F4 | Cylinder 7 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22F5 | Cylinder 8 Alternative Fuel Injector Control Circuit/Open | Medium |
| P22F6 | Cylinder 8 Alternative Fuel Injector Control Circuit Low | Medium |
| P22F7 | Cylinder 8 Alternative Fuel Injector Control Circuit High | Medium |
| P22F8 | Cylinder 8 Alternative Fuel Injector Control Circuit Range/Performance | Medium |
| P22F9 | NOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 1) | Medium |
| P22FA | NOx Sensor Performance - Slow Response High to Low (Bank 1 Sensor 1) | Medium |
| P22FB | NOx Sensor Performance - Sensing Element (Bank 1 Sensor 1) | Medium |
| P22FC | NOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 2) | Medium |
| P22FD | NOx Sensor Performance - Slow Response High to Low (Bank 1 Sensor 2) | Medium |
| P22FE | NOx Sensor Performance - Sensing Element (Bank 1 Sensor 2) | Medium |
| P22FF | SCR NOx Catalyst Inlet Temperature Too Low | Medium |