P262E code meaning
Sensor Reference Voltage G Circuit High
Powertrain system Generic code P26xx codes Check engine light
What P262E means
With P262E the 5 V supply G that the engine module feeds to a sensor group sits above its upper limit. That points to an external voltage source getting onto the line, for example a reference wire rubbed through against a 12 V feed or a sensor signal wire, or to a regulator inside the module that no longer holds its setpoint. Sensors powered from G scale their outputs with this supply, so their readings rise and can become implausible; a hard short to battery voltage may also damage them. No manufacturer documents P262E publicly. Ford's 2012 summary treats more than 5.25 V on its reference A for 5 s as a short toward battery voltage, and GM's tables use 5.125 V as the ceiling for its collective reference codes. P262D is the low fault, P262F the plausibility fault on circuit G.
P262E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P262E
- Check engine light
- Readings of several sensors too high or implausible
- Limp mode or reduced power possible
Common causes of P262E
- Most likelyReference wire G shorted to a 12 V feed or another powered circuit
- PossibleSensor on the group feeding voltage back into the reference
- Less likelyInternal regulator of the engine module out of tolerance
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Sensor reference voltage circuitSensor wiringEngine control module
What each part of P262E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 2E | The exact fault in that area. |
What to do next
- Note P262E 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 P262E
What does P262E mean?
P262E means "Sensor Reference Voltage G Circuit High". With P262E the 5 V supply G that the engine module feeds to a sensor group sits above its upper limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P262E?
Drive gently and only to a workshop. With P262E the car can go into limp mode (reduced power) to protect itself.
Will P262E fail an emissions test?
Yes, it can. P262E 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 P262E to fix?
Difficulty: medium. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P262E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.