P0ACC Fault Code

Hybrid Battery Temperature Sensor "C" Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0ACC fault code indicates a problem with the Hybrid Battery Temperature Sensor 'C' Circuit. This warning arises when the output from the temperature sensor connected to the hybrid battery is lower than expected, suggesting a potential malfunction in the sensor or its wiring.

What are the symptoms of the P0ACC code?

Symptoms of the P0ACC fault code can manifest as:

• Warning lights on the dashboard, specifically the check engine light
• Reduced hybrid system performance or efficiency
• Increased fuel consumption
• Potential overheating of the hybrid battery pack due to temperature misreadings

What causes the P0ACC code?

Possible causes for this fault code include:

• A defective hybrid battery temperature sensor
• Poor electrical connections or damaged wiring in the sensor circuit
• Faulty Engine Control Module (ECM) readings
• Shorted or open circuits affecting the sensor's performance

How to fix P0ACC?

To resolve the P0ACC fault code, you can consider the following steps:

• Inspect the wiring and connectors related to the hybrid battery temperature sensor for any signs of damage or corrosion
• Test the temperature sensor itself for proper functionality
• Replace the hybrid battery temperature sensor if it's found to be defective
• Reprogram or update the Engine Control Module if necessary, ensuring it responds correctly to sensor inputs