OBD Guide

P0A37

Generator Temperature Sensor Circuit Range/Performance

P0A37 is an OBD-II diagnostic trouble code meaning: Generator Temperature Sensor Circuit Range/Performance. Common causes: faulty generator temperature sensor, open or short circuit in the sensor circuit. Estimated repair cost: $17–50.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–50 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable generator operation
  • Increased temperature in the engine compartment
  • Reduced battery charging efficiency
  • False generator temperature readings

Causes

  • Faulty generator temperature sensor
  • Open or short circuit in the sensor circuit
  • Corroded or loose connector pins
  • Problems with the generator
  • ECU software error

How to Fix

  1. Check the resistance of the temperature sensor
  2. Inspect the wiring harness for damage or chafing.
  3. Clean sensor connector contacts
  4. Check generator operation
  5. Reset the error and test the system after repair

Related codes

Error P0A37 by Vehicle Brand

FAQ

What does the P0A37 code mean?

P0A37 is an OBD-II diagnostic trouble code that indicates: Generator Temperature Sensor Circuit Range/Performance

What causes a P0A37 error code?

The most common causes of P0A37 include: Faulty generator temperature sensor; Open or short circuit in the sensor circuit; Corroded or loose connector pins; Problems with the generator.

How do I fix a P0A37 diagnostic trouble code?

To fix P0A37: Check the resistance of the temperature sensor. Inspect the wiring harness for damage or chafing.. Clean sensor connector contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0A37?

Limited driving only, diagnose soon

How much does it cost to fix P0A37?

The estimated repair cost for P0A37 is $17–50. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat