OBD-II code · Powertrain (generic)
P0475 Exhaust Pressure Control Valve A
A general fault on exhaust pressure control valve A — used as a backpressure brake on heavy-duty diesels and to assist DPF regeneration by raising exhaust temperature.
Is it safe to drive with P0475?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve seized or solenoid failed
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.7–3.5 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Pressure Regulator
Related codes
- P049FExhaust Pressure Control Valve B
- P0472Exhaust Pressure Sensor A Circuit Low
- P0473Exhaust Pressure Sensor A Circuit High
- P0474Exhaust Pressure Sensor A Circuit Intermittent/Erratic
- P0476Exhaust Pressure Control Valve A Range/Performance
- P0477Exhaust Pressure Control Valve A Low
- P0478Exhaust Pressure Control Valve A High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.