P2EA2 code meaning
Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 6
Powertrain system Generic code P2Exx codes Check engine light
What P2EA2 means
P2EA2 says the signal of the sixth bank 1 exhaust probe sits above its upper electrical limit. Which temperature that implies depends on the element. Most probes form a voltage divider with a pull-up resistor in the module; an open lead then drives the input to the reference, which an NTC part reads as extreme cold and a platinum (PTC) part as extreme heat. Heraeus notes that both platinum resistors and thermocouples are used beyond 900 °C. No maker documents P2EA2; the closest public analogue is GM's probe 5 code P2482 in 25OBDG04A: more than 100 MΩ, or above about 1290 °C on a digital thermocouple, in 19 of 25 samples, Type A with the lamp after one trip. An unplugged connector or broken lead is therefore the prime suspect.
P2EA2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2EA2
- Check engine lamp, often after a single trip
- Probe 6 shows an impossible extreme value in live data
- Filter regeneration or SCR dosing restricted
Common causes of P2EA2
- Most likelyOpen signal or ground lead, or connector not latched
- PossibleProbe element burnt open after overheating or vibration
- Less likelySignal wire shorted to the 5 V reference or battery voltage
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Exhaust gas temp sensor b1 s6Wiring harnessECM
What each part of P2EA2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| A2 | The exact fault in that area. |
What to do next
- Note P2EA2 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 P2EA2
What does P2EA2 mean?
P2EA2 means "Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 6". P2EA2 says the signal of the sixth bank 1 exhaust probe sits above its upper electrical limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2EA2?
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 P2EA2 fail an emissions test?
Yes, it can. P2EA2 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 P2EA2 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P2EA2 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.