P0902 moderate

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.

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Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $200 - $1,200 (parts and labor)

Check Your Fluid First

ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

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Read Transmission Codes

LAUNCH CRP123X (Reads All Systems)

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

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

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.