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 thinks the pump that cools the air going into the engine is not working right because it is getting too much power.
The P023C code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the control circuit of the charge air cooler coolant pump 'A'.
The charge air cooler coolant pump is responsible for circulating coolant through the charge air cooler to reduce the temperature of the air entering the engine. A 'Control Circuit High' condition indicates that the voltage in the control circuit is higher than expected, which can be due to a short circuit, faulty pump, or issues with the PCM.
• Check Engine Light is on
• Reduced engine performance
• Overheating of charge air cooler
• Faulty charge air cooler coolant pump
• Short circuit in wiring harness
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the charge air cooler coolant pump for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the charge air cooler coolant pump if faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regularly inspect and maintain coolant system components.
• Ensure proper coolant levels are maintained.
• Address any electrical issues promptly.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent such issues.
Check with your vehicle manufacturer for warranty coverage on the charge air cooler system.
This code is relatively common in turbocharged vehicles where the charge air cooler system is critical for performance.
Moderate – While the vehicle may still operate, performance can be affected and overheating risks are present.
Driving with a malfunctioning charge air cooler can lead to engine damage. Address this issue promptly.
• Engine at operating temperature
• Vehicle in idle or low load condition
The charge air cooler coolant pump is typically located near the radiator or intercooler, depending on the vehicle design.
Q: Can I drive with a P023C code?
A: It's not recommended as it can affect engine performance and cause overheating.
Q: How do I reset the P023C code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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