P2468 code meaning
Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 3)
Powertrain system Generic code P24xx codes Check engine light
What P2468 means
P2468 reports that probe 3 in the bank 2 exhaust line delivers a signal below the lowest value the input can produce with an intact circuit. With the usual resistive probes this nearly always means the signal line or the sensor itself has a ground short. No manufacturer lists this bank 2 code publicly; the neighbouring low codes show the scale. Ford's 2023 diesels treat anything below 0.10 V as a fault once ignition is on and supply lies between 9 and 16.25 V, judged within about 2 s, and GM's 2020 diesel tables flag a probe resistance below 158 Ω for sensor 4 as a Type B fault after 10 of 20 samples. CARB demands out-of-range checks for such inputs. Look for chafed insulation against the exhaust or a melted connector. The opposite fault, signal too high or open, is P2469.
P2468 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2468
- MIL on
- Probe shows an implausible value at a standstill
- Regeneration or DEF dosing inhibited
Common causes of P2468
- Most likelySignal wire chafed through and touching ground
- PossibleInternal short inside the probe
- Less likelyConnector melted or with water ingress
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Egt sensor b2s3
What each part of P2468 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 68 | The exact fault in that area. |
What to do next
- Note P2468 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2468
What does P2468 mean?
P2468 means "Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 3)". P2468 reports that probe 3 in the bank 2 exhaust line delivers a signal below the lowest value the input can produce with an intact circuit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2468?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2468 fail an emissions test?
Yes, it can. P2468 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2468 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2468 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.