P0437
Catalyst Temperature Sensor Circuit Low Bank 2 Sensor 1
P0437 is an OBD-II diagnostic trouble code meaning: Catalyst Temperature Sensor Circuit Low Bank 2 Sensor 1. Common causes: malfunction of the catalytic converter temperature sensor, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced catalytic converter efficiency
- Possible increase in fuel consumption
Causes
- Malfunction of the catalytic converter temperature sensor
- Open or short circuit in wiring harness
- Poor contact in connectors
- Engine control unit (ECU) malfunction
How to Fix
- Check the integrity of the wiring harness and contacts
- Check the resistance of the temperature sensor
- Replace temperature sensor if necessary
- Check the operation of the engine control unit
Related codes
Error P0437 by Vehicle Brand
FAQ
What does the P0437 code mean?
P0437 is an OBD-II diagnostic trouble code that indicates: Catalyst Temperature Sensor Circuit Low Bank 2 Sensor 1
What causes a P0437 error code?
The most common causes of P0437 include: Malfunction of the catalytic converter temperature sensor; Open or short circuit in wiring harness; Poor contact in connectors; Engine control unit (ECU) malfunction.
How do I fix a P0437 diagnostic trouble code?
To fix P0437: Check the integrity of the wiring harness and contacts. Check the resistance of the temperature sensor. Replace temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0437?
Limited driving only, diagnose soon
How much does it cost to fix P0437?
The estimated repair cost for P0437 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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