OBD-II code · Powertrain (generic)
P0472 Exhaust Pressure Sensor A Circuit Low
Exhaust pressure sensor A below lower plausibility — short to ground. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0472?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyShort to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Pressure Sensor
Related codes
- P0470Exhaust Pressure Sensor A Circuit
- P047CExhaust Pressure Sensor B Circuit Low
- P046FEGR Sensor B Circuit Intermittent/Erratic
- P0471Exhaust Pressure Sensor A Circuit Range/Performance
- P0473Exhaust Pressure Sensor A Circuit High
- P0474Exhaust Pressure Sensor A Circuit Intermittent/Erratic
- P0475Exhaust Pressure Control Valve A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.