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 has detected a problem with the electric pump that helps move fluid in the transmission. It's like if a water pump in a garden stopped working right.
The P0C25 code indicates that there is an issue with the control circuit for the electric or auxiliary transmission fluid pump. The circuit is reading a voltage that is higher than expected.
The P0C25 code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the control circuit of the electric or auxiliary transmission fluid pump. This pump is responsible for maintaining the proper pressure and flow of transmission fluid, which is critical for the transmission's operation. A high voltage condition could indicate a short circuit, a faulty control module, or issues with the wiring.
• Illuminated check engine light
• Transmission may not shift properly
• Unusual noises from the transmission
• Reduced fuel efficiency
• Faulty electric/auxiliary transmission fluid pump
• Short circuit in the pump control circuit
• Faulty control module
• Corroded or damaged wiring/connectors
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the electric/auxiliary transmission fluid pump for proper operation.
• Check the control module for faults.
• Repair or replace damaged wiring or connectors.
• Replace the electric/auxiliary transmission fluid pump if faulty.
• Replace or reprogram the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Ford Fusion Hybrid
• Regular maintenance of the transmission system
• Ensure electrical connections are clean and secure
• Avoid driving in extreme conditions that can stress the transmission
Sensor Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if the transmission is not operating correctly.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code has been more prevalent in hybrid vehicles due to their reliance on electric pumps for transmission fluid management.
Moderate – It is important to address this issue to prevent potential transmission damage.
Driving with a malfunctioning transmission can be dangerous and may lead to further damage. Address the issue promptly.
• Vehicle at operating temperature
• Transmission in drive
The electric/auxiliary transmission fluid pump is typically located near the transmission assembly.
Q: Can I drive with a P0C25 code?
A: It's not recommended to drive with this code active, as it can lead to further transmission damage.
Q: How can I reset the P0C25 code?
A: After fixing the underlying issue, you can use an OBD-II scanner to clear the code.
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