P2601 – Audi DTC

Audi DTC P2601 – Coolant Heat Storage (CHS) water pump failure, Coolant Heat Storage (CHS) water pump relay, Powertrain Control Module (PCM) failure, Wiring issue

DTC P2601 meaning on Audi

DTC P2601 refers to a malfunction in the Coolant Heat Storage (CHS) water pump system in Audi vehicles. This diagnostic trouble code indicates that the CHS water pump is not functioning as intended, which can affect the vehicle’s ability to manage engine temperature effectively. The CHS system is designed to store heat from the engine coolant and release it when needed, particularly during cold starts or when the engine is under heavy load.

Audi DTC P2601 symptoms

Common symptoms associated with DTC P2601 may include:

• Engine overheating
• Increased fuel consumption
• Reduced heating performance in the cabin
• Warning lights on the dashboard, particularly the check engine light
• Unusual noises from the engine compartment

Audi DTC P2601 causes

Several factors can lead to the triggering of DTC P2601, including:

• Failure of the Coolant Heat Storage (CHS) water pump
• Faulty CHS water pump relay
• Issues with the Powertrain Control Module (PCM)
• Wiring problems, such as shorts or open circuits in the electrical system
• Corrosion or damage to connectors related to the CHS system

Audi DTC P2601 seriousness

The seriousness of DTC P2601 can vary based on the symptoms and the underlying cause. If left unaddressed, it can lead to:

• Severe engine overheating, which can cause engine damage
• Increased emissions due to inefficient engine operation
• Potential failure of other engine components

It is advisable to diagnose and repair the issue promptly to avoid further complications.

How to diagnose DTC P2601 on Audi

To diagnose DTC P2601, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC P2601.
2. Inspect the CHS water pump and relay for visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or disconnection.
4. Test the CHS water pump operation using a multimeter to ensure it receives power.
5. Examine the Powertrain Control Module (PCM) for any fault codes or issues.
6. Perform a functional test of the CHS system to verify its operation.

How to fix DTC P2601 on Audi step-by-step instructions

To fix DTC P2601, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and replace the CHS water pump if it is found to be faulty.
3. Replace the CHS water pump relay if it is not functioning correctly.
4. Repair or replace any damaged wiring or connectors associated with the CHS system.
5. Reprogram or replace the PCM if it is determined to be faulty.
6. Test the system again to ensure the issue is resolved and no new codes appear.

How to erase DTC P2601 on Audi

To erase DTC P2601 from the vehicle’s memory, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the ‘Erase Codes’ or ‘Clear DTCs’ option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to verify that the code does not reappear.

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