OBD-II code · Powertrain (generic, extended)
P25A1 Turbocharger B Boost Control Position At High Limit
Turbocharger B Boost Control Position At High Limit: the control module has detected this fault condition. This affects turbo/supercharger boost-pressure control.
Is it safe to drive with P25A1?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyWastegate stuck closed
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–5 h
- Emissions test
- Likely to fail
- Parts involved
- Turbo Actuator B, Wastegate
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.