What does code P090A mean?

Q: What does code P090A mean?

Clutch B Actuator Control Circuit/Open. P090A indicates that the powertrain control module (PCM) has detected an open circuit or loss of continuity in the control circuit for clutch actuator B, which is used in automated manual or dual-clutch transmissions to engage and disengage a clutch. The PCM monitors the circuit for expected voltage or current and sets this code when the signal falls outside the normal range, often disabling the actuator to protect the transmission.

DTC codes / P09xx · Transmission / P090A

P090AClutch B Actuator Control Circuit/Open

P090A indicates that the powertrain control module (PCM) has detected an open circuit or loss of continuity in the control circuit for clutch actuator B, which is used in automated manual or dual-clutch transmissions to engage and disengage a clutch. The PCM monitors the circuit for expected voltage or current and sets this code when the signal falls outside the normal range, often disabling the actuator to protect the transmission.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.