P023A – BMW DTC

BMW DTC P023A – Charge Air Cooler Coolant Pump Control Circuit/Open

DTC P023A meaning on BMW

DTC P023A for BMW indicates a fault in the Charge Air Cooler Coolant Pump Control Circuit, specifically an open circuit. This fault code is related to the system responsible for controlling the charge air cooler coolant pump, which helps regulate the temperature of the charge air entering the engine.

BMW DTC P023A symptoms

Symptoms of DTC P023A on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Engine overheating
• Increased fuel consumption

BMW DTC P023A causes

Common causes of DTC P023A on a BMW include:

• Faulty charge air cooler coolant pump
• Open or short circuit in the control circuit
• Corroded or damaged wiring/connectors
• Defective engine control module (ECM)

BMW DTC P023A seriousness

DTC P023A should be addressed promptly as it can lead to engine overheating and potential damage if left unresolved. Continued driving with this fault can also result in reduced engine performance and increased fuel consumption.

How to diagnose DTC P023A on BMW

To diagnose DTC P023A on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data.
2. Inspect the charge air cooler coolant pump and related components for any visible damage.
3. Check the wiring and connectors for signs of corrosion or damage.
4. Perform a continuity test on the control circuit to check for open circuits.
5. If necessary, test the charge air cooler coolant pump for proper operation.

How to fix DTC P023A on BMW

To fix DTC P023A on a BMW, consider the following steps:

1. Replace the faulty charge air cooler coolant pump if necessary.
2. Repair any open or short circuits in the control circuit.
3. Repair or replace any corroded or damaged wiring/connectors.
4. If the ECM is found to be defective, replace it with a new one.
5. Clear the fault code and test drive the vehicle to ensure the issue is resolved.

How to erase DTC P023A on BMW

To erase DTC P023A on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault code from the ECM memory.
2. Perform a test drive to ensure the fault code does not reappear.
3. If the fault code returns, further diagnosis may be required to address the underlying issue.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.