OBD-II code · Powertrain (generic)
P048B Exhaust Pressure Control Valve A Position Sensor/Switch Circuit
A general electrical fault on the position sensor of exhaust pressure control valve A.
Is it safe to drive with P048B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPosition sensor failed
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Pressure Regulator
Related codes
- P0488EGR Throttle Control Circuit A Range/Performance
- P0489EGR A Control Circuit Low
- P048AExhaust Pressure Control Valve A Stuck Closed
- P048CExhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance
- P048DExhaust Pressure Control Valve A Position Sensor/Switch Circuit Low
- P048EExhaust Pressure Control Valve A Position Sensor/Switch Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.