Fault Code 1592

Fault Code 1592

Air quality sensor

Diagnostic conditions
- Ignition on
- Battery voltage OK (11.4 to 14.5 V)
- Internal function test completed on air-conditioning system regulator control module

Possible causes of fault
- Short circuit to ground
- Implausible signal
- Open circuit/short circuit to B+
- Air quality sensor faulty
- Front air-conditioning system regulator control module faulty

Affected pins
Air-conditioning system regulator control module, front: Plug C
- Pin 19 Air quality sensor

Diagnosis/troubleshooting

Work Instruction 1 - 6: