P0645

2F12 - P0645

Information saved in
DME

Fault code
2F12 - P0645

Fault text
Air-conditioning compressor, activation

Fault description
A/C Clutch Relay Control Circuit

Condition for fault identification
Test condition:
Air conditioner relay control-activation monitor; air
conditioning initialized
Briefly triggered by relay
Air conditioning installed and
switched on
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
1 sec.

Action in service
2. Check wiring
Repair if defective
If wiring is OK proceed
to check component, a/c compressor relay

Fault effect and breakdown warning


Driver information
Warning light:
no external display;

Service instruction
none