P0901: Clutch Actuator Circuit Range/Performance OBD-II Trouble Code

On vehicles equipped with a semiautomatic transmission, gear changes take place when the TCM actuates the clutch actuator to engage or disengage the clutch. If there is a performance issue with the transmission clutch actuator, a P0901 DTC will be saved.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

How Serious is the Code?

A P0901 diagnostic trouble code means that the the TCM is not able to properly control the clutch, which can lead to a number of transmission problems that include engine stalling and a failure to shift gears.

Symptoms

Symptoms of a P0901 include:

  • Engine will not start
  • Engine stalls
  • Transmission is stuck in a single gear
  • Limp Mode

Causes

  • Faulty clutch actuator
  • Faulty solenoid
  • Faulty clutch stroke/movement sensors
  • Damaged wiring and/or connectors
  • Loose control module ground
  • Faulty fuse or fusible link
  • Faulty clutch master cylinder
  • ECU programming issues
  • Faulty ECU or TCM

How to Diagnose the Code?

Because each manufacturer’ transmission designs vary greatly, the diagnostic procedure for a P0901 OBDII trouble code can be just as different. For example, low brake fluid can actually cause a P0901 OBD2 code, so it’s important to consult the diagnostic procedures outlined by the manufacturer.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

What Repairs Will Fix P0901?

  • Replace transmission clutch actuator
  • Replace solenoid(s)
  • Replace sensor(s)
  • Repair or replace wiring/connectors
  • Replace failed fuses and/or fusible link
  • Replace clutch master cylinder
  • Update ECU programming
  • Replace failed TCM/ECU

Related Codes

  • P0900 – Clutch Actuator Circuit/Open
  • P0902 – Clutch Actuator Circuit Low
  • P0903 – Clutch Actuator Circuit High