P2474 code meaning
Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 4)
Powertrain system Generic code P24xx codes Check engine light
What P2474 means
P2474 flags a plausibility problem: the electrical signal of bank 2 probe 4 is valid, yet the temperature it reports does not fit what the engine controller expects. Typical tests compare the probe with its neighbours after a long soak, when all should read about ambient, or with a modelled value during driving. Ford handles the bank 1 analogue P246F as a sensor-to-sensor check on its single-bank diesels; for the second bank no maker publishes P2474. CARB requires rationality monitoring for exhaust temperature inputs that feed emission strategies. A skewed probe can start or block regeneration at the wrong time, so the driver may notice higher fuel use or a regeneration that never completes.
P2474 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 repairAfter a drive cycle
Symptoms of P2474
- MIL on after repeated detection
- Probe 4 of bank 2 differs clearly from the other probes after a cold soak
- Regenerations incomplete or more frequent
Common causes of P2474
- Most likelyProbe aged and reading off by a constant amount
- PossibleSoot-coated probe tip reacting slowly
- Less likelyExhaust leak upstream of the probe falsifying the reading
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Egt sensor b2s4
What each part of P2474 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). |
| 74 | The exact fault in that area. |
What to do next
- Note P2474 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 P2474
What does P2474 mean?
P2474 means "Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 4)". P2474 flags a plausibility problem: the electrical signal of bank 2 probe 4 is valid, yet the temperature it reports does not fit what the engine controller expects. It is a generic code, so it means the same on every make.
Is it safe to drive with P2474?
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 P2474 fail an emissions test?
Yes, it can. P2474 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 P2474 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 P2474 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.