BMW DTC P26AE – Engine Coolant Bypass Valve ‘B’ Control Circuit High
DTC P26AE meaning on BMW
DTC P26AE indicates a fault with the Engine Coolant Bypass Valve ‘B’ Control Circuit in a BMW vehicle. This fault code specifically points to a high voltage condition detected in the control circuit of the bypass valve.
BMW DTC P26AE symptoms
Symptoms of DTC P26AE in a BMW may include:
- Check Engine Light illuminated on the dashboard
- Engine running hotter than normal
- Reduced engine performance
BMW DTC P26AE causes
Common causes of DTC P26AE in a BMW include:
- Faulty Engine Coolant Bypass Valve ‘B’
- Wiring or connector issues in the control circuit
- ECU (Engine Control Unit) malfunction
BMW DTC P26AE seriousness
While DTC P26AE may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential overheating of the engine and other related problems. Ignoring this fault code can lead to more severe engine issues over time.
How to diagnose DTC P26AE on BMW
To diagnose DTC P26AE on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the Engine Coolant Bypass Valve ‘B’ and its wiring for any visible damage
- Check the voltage and continuity in the control circuit using a multimeter
- Perform a thorough visual inspection of the connectors and wiring related to the bypass valve
How to fix DTC P26AE on BMW
To fix DTC P26AE on a BMW, you can try the following solutions:
- Replace the Engine Coolant Bypass Valve ‘B’ if it is found to be faulty
- Repair any damaged wiring or connectors in the control circuit
- If the ECU is suspected to be the issue, have it tested or replaced by a qualified technician
How to erase DTC P26AE on BMW
To erase DTC P26AE on a BMW, you can use a diagnostic scanner to clear the fault code from the ECU’s memory. After fixing the underlying issue causing the fault code, clearing it from the system will reset the Check Engine Light and ensure the repair was successful.
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
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