P25A0
Turbocharger B Boost Control Position At Low Limit
Turbocharger B Boost Control Position At Low Limit: the control module has detected this fault condition. This affects turbo/supercharger boost-pressure control.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Boost leak in the charge-air pathCommon
Parts involved
- Turbo Actuator B
P25A0 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.