Clutch Actuator Circuit Low
The P0902 code means the vehicle's onboard diagnostic system has detected: Clutch Actuator Circuit Low. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $1,200 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Check Engine Light illuminated
- Clutch engagement delayed or incomplete
- Transmission jerking during gear changes
- Vehicle may stall at low speeds
Probable Causes (Ranked by Likelihood)
- Short to ground in clutch actuator circuit Very High
- Faulty clutch actuator motor with low current draw High
- Corroded connector at clutch actuator Moderate
- TCM output driver shorted low Low
Frequently Asked Questions
What causes the clutch actuator circuit to read low?
A low circuit typically means there is a short to ground in the wiring or the actuator motor has reduced resistance, drawing the voltage down below the expected threshold.
Can water damage cause P0902?
Yes, the clutch actuator is located near the transmission and can be exposed to water splash. Water intrusion at the connector is a common cause of low circuit faults.
Is driving in limp mode safe with P0902?
You can drive short distances carefully, but the clutch engagement may be unpredictable. Avoid heavy traffic and hills where stalling would be dangerous.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Measure voltage at the clutch actuator connector with key on
-
Check for short to ground in the actuator circuit wiring
-
Inspect the actuator connector for corrosion or water intrusion
-
Test actuator motor resistance and compare to specifications
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2011-2016 Ford Fiesta (PowerShift)
- 2012-2016 Ford Focus (PowerShift)
- 2010-2018 Fiat Punto (MTA)
- 2008-2016 Smart ForTwo
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