Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble controlling the part that helps the car change gears. It's like when a toy robot's arm won't move because the wires are loose.
The P0900 code is set when the powertrain control module (PCM) detects an open circuit or a problem in the clutch actuator control circuit.
The P0900 code indicates an issue with the clutch actuator control circuit, specifically an open circuit condition. This can be due to a faulty actuator, wiring issues, or a problem with the PCM. The clutch actuator is responsible for engaging and disengaging the clutch in vehicles equipped with automated manual transmissions.
• Check Engine Light illuminated
• Difficulty shifting gears
• Vehicle may not move when in gear
• Unusual noises from the transmission
• Faulty clutch actuator
• Open or shorted wiring in the clutch actuator circuit
• Poor electrical connection in the clutch actuator circuit
• Faulty PCM
PCM: Powertrain Control Module, the computer that controls engine and transmission functions.
Actuator: A component that moves or controls a mechanism or system.
• Use an OBD-II scanner to confirm the code.
• Visually inspect the clutch actuator and related wiring for damage or disconnections.
• Test the clutch actuator for proper operation and electrical resistance.
• Check the PCM for proper functionality.
• Repair or replace damaged wiring or connectors in the clutch actuator circuit.
• Replace the faulty clutch actuator.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $600
Moderate
• Ford Focus
• Volkswagen Jetta
• Chevrolet Cruze
• Regular maintenance of the transmission system
• Inspect wiring and connectors periodically
• Avoid aggressive driving that can stress the transmission
Transmission Control Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for an accurate diagnosis and repair.
Check with your vehicle manufacturer for any warranty coverage related to transmission components.
The P0900 code has been more prevalent in vehicles with automated manual transmissions, especially those with higher mileage.
High – This issue can lead to transmission failure and should be addressed promptly.
Driving with a faulty clutch actuator can lead to unsafe driving conditions and should be repaired to ensure vehicle safety.
• Vehicle must be in a safe location for testing.
• Ensure the vehicle is not in gear during inspection.
The clutch actuator is typically located near the transmission, often on the side or top, depending on the vehicle model.
Q: Can I drive with a P0900 code?
A: It's not recommended to drive with this code as it can lead to transmission issues and unsafe driving conditions.
Q: How do I clear the P0900 code?
A: The code can be cleared with an OBD-II scanner, but it's important to fix the underlying issue first.
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