Manufacturer Code Charts

Control Panel Fault Code Diagnosis

Condition(s):

NOTE: Reference fault code #23*: In ambient temperatures below 0°C, this code may be logged because the low ambient causes a temporary low gas pressure.

NOTE: Where the ambient temperature rises above 40°C, with the engine close to overheating, electrical feed to the compressor clutch may be cut and code #23 registered.

0 Normal operation no fault codes present
Possible Source(s):
- None

Action(s) to take:
- Wait 30 seconds for system self-check.

11 Motorized in-car aspirator malfunction
Possible Source(s):
- Harness / connector fault
- Sensor open / short circuit

Action(s) to take:
- Panel fault codes are not stored for motorized in-car aspirator motor failure.

12 Ambient temperature sensor malfunction
Possible Source(s):
- Harness / connector fault
- Sensor open / short circuit

Action(s) to take:
- After rectification, disconnect the vehicle battery for 10 seconds to reset the system.

13 Evaporator temperature sensor malfunction
Possible Source(s):
- Harness / connector fault
- Sensor open/short circuit

Action(s) to take:
- Refer to PDU

14 Water temperature input malfunction
Possible Source(s):
- Instrument cluster output

Action(s) to take:
- Refer to PDU

15 Heater matrix temperature sensor malfunction
Possible Source(s):
- Harness / connector fault
- Sensor open / short circuit

Action(s) to take:
- Refer to PDU

21 Solar sensor
Possible Source(s):
- Sensor open / short circuit

Action(s) to take:
- Refer to PDU

22 Compressor lock signal fault
Possible Source(s):
- Low refrigerant charge, low compressor oil level, loose drive belt
- Harness / connector fault

Action(s) to take:
- Adjust items as required

23 Refrigerant pressure switch malfunction
Possible Source(s):
- Harness / connector fault
- Switch open / short circuit

Action(s) to take:
- Refer to PDU

23 Refrigerant pressure low refrigerant charge*
Possible Source(s):
- Leak from damaged pipe or joint

Action(s) to take:
- Rectify as required & recharge system

24 Face vent demand potentiometer fault
Possible Source(s):
- Potentiometer open / short circuit
- Harness / connector fault

Action(s) to take:
- Refer to PDU

31 LH fresh / recirc. potentiometer fault
Possible Source(s):

- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

32 RH fresh / recirc. potentiometer fault
Possible Source(s):
- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

33 Cool air by-pass potentiometer fault
Possible Source(s):
- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

34 Defrost vent potentiometer fault
Possible Source(s):
- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

35 center vent potentiometer fault
Possible Source(s):
- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

36 Foot vent potentiometer fault
Possible Source(s):
- Harness / connector fault
- In certain circumstances the servo motor may over-travel & cause further logged faults. This may be cured, following fault rectification, by cycling the ignition ON-OFF-ON 3 times

Action(s) to take:
- Refer to PDU

41 LH fresh 1 recirc. motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

42 RH fresh / recirc. motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

43 Cool air by-pass motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

43 Cool Air by-pass motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

44 Defrost vent motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

45 center vent motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU

46 Foot vent motor fault
Possible Source(s):
- Harness / connector fault
- Servo motor seized or sticking
- Flap seized or sticking

Action(s) to take:
- Refer to PDU