BMW DTC P266F – A/C Refrigerant Distribution Valve Control Circuit Driver Current/Temperature Too High
DTC P266F meaning on BMW
DTC P266F on a BMW refers to the A/C Refrigerant Distribution Valve Control Circuit Driver Current/Temperature Too High. This diagnostic trouble code indicates that there is an issue with the control circuit for the refrigerant distribution valve in the air conditioning system of the vehicle.
BMW DTC P266F symptoms
Symptoms of DTC P266F on a BMW may include:
- Malfunctioning air conditioning system
- Reduced cooling performance
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P266F causes
Common causes of DTC P266F on a BMW include:
- Faulty A/C refrigerant distribution valve
- Short circuit or open circuit in the control circuit
- High current or temperature in the control circuit
BMW DTC P266F seriousness
DTC P266F should not be ignored as it can lead to poor air conditioning performance and discomfort while driving. Additionally, prolonged operation with this fault may cause further damage to the air conditioning system.
How to diagnose DTC P266F on BMW
To diagnose DTC P266F on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
- Inspect the A/C refrigerant distribution valve and its control circuit for any visible damage or signs of malfunction
- Check the wiring and connectors associated with the control circuit for proper connection and continuity
- Measure the current and temperature in the control circuit to determine if they are within the specified range
How to fix DTC P266F on BMW
To fix DTC P266F on a BMW, the following steps may be taken:
- Replace the faulty A/C refrigerant distribution valve if it is determined to be the cause of the issue
- Repair any short circuits or open circuits in the control circuit
- Address any high current or temperature issues in the control circuit by replacing damaged components
How to erase DTC P266F on BMW
After fixing the underlying issue causing DTC P266F on a BMW, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s computer memory and turn off the Check Engine Light.
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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