OBD-II code · Powertrain (generic, extended)
P2E56 Exhaust Pressure Sensor C Circuit Low
The ECM detects a circuit low fault on the exhaust pressure sensor c circuit. Reading cannot be used reliably for control.
Is it safe to drive with P2E56?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Pressure Sensor C, Wiring Harness, Ecm
Related codes
- P2E53Battery Charger Coupler Temperature D Too High
- P2E54Exhaust Pressure Sensor C Circuit
- P2E55Exhaust Pressure Sensor C Circuit Range/Performance
- P2E57Exhaust Pressure Sensor C Circuit High
- P2E58Alternative Fuel Random/Multiple Cylinder Misfire Detected
- P2E59Cylinder 1 Alternative Fuel Misfire Detected
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.