P1437
A/C Evaporator Air Temperature Circuit High
P1437 is an OBD-II diagnostic trouble code meaning: A/C Evaporator Air Temperature Circuit High. Common causes: evaporator temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $22–89.
Symptoms
- Incorrect operation of the air conditioner (air too cold or warm)
- The air conditioner turns on and off randomly
- Fault indication on the instrument panel
- Increased fuel consumption due to continuous operation of the compressor
Causes
- Evaporator temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Corrosion or poor contact in connectors
- Air conditioning control unit malfunction
How to Fix
- Check the resistance and voltage of the evaporator temperature sensor
- Inspect wiring and connectors for damage
- Check the operation of the air conditioning control unit
- If necessary, replace the evaporator temperature sensor
Related codes
FAQ
What does the P1437 code mean?
P1437 is an OBD-II diagnostic trouble code that indicates: A/C Evaporator Air Temperature Circuit High
What causes a P1437 error code?
The most common causes of P1437 include: Evaporator temperature sensor malfunction; Open or short circuit in the sensor circuit; Corrosion or poor contact in connectors; Air conditioning control unit malfunction.
How do I fix a P1437 diagnostic trouble code?
To fix P1437: Check the resistance and voltage of the evaporator temperature sensor. Inspect wiring and connectors for damage. Check the operation of the air conditioning control unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1437?
Yes, but get it checked soon
How much does it cost to fix P1437?
The estimated repair cost for P1437 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat