OBD-II code · Powertrain (generic)
P047A Exhaust Pressure Sensor B Circuit
A general electrical fault on exhaust pressure sensor B — used to monitor backpressure across the DPF or to control variable-geometry turbo.
Is it safe to drive with P047A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed
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
- P0477Exhaust Pressure Control Valve A Low
- P0478Exhaust Pressure Control Valve A High
- P0479Exhaust Pressure Control Valve A Intermittent
- P047BExhaust Pressure Sensor B Circuit Range/Performance
- P047CExhaust Pressure Sensor B Circuit Low
- P047DExhaust Pressure Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.