OBD Guide

P0C38

DC/DC Converter Temperature Sensor A Circuit

P0C38 is an OBD-II diagnostic trouble code meaning: DC/DC Converter Temperature Sensor A Circuit. Common causes: dc/dc converter temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced electrical system efficiency
  • DC/DC converter overheating
  • Unstable voltage in the system

Causes

  • DC/DC converter temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • DC/DC converter malfunction
  • Problems with the engine control unit (ECU)

How to Fix

  1. Check the temperature sensor of the DC/DC converter
  2. Check the sensor circuit for breaks and short circuits
  3. Check the connectors and contacts of the sensor
  4. If necessary, replace the temperature sensor
  5. Check the functionality of the DC/DC converter

Related codes

Error P0C38 by Vehicle Brand

FAQ

What does the P0C38 code mean?

P0C38 is an OBD-II diagnostic trouble code that indicates: DC/DC Converter Temperature Sensor A Circuit

What causes a P0C38 error code?

The most common causes of P0C38 include: DC/DC converter temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; DC/DC converter malfunction.

How do I fix a P0C38 diagnostic trouble code?

To fix P0C38: Check the temperature sensor of the DC/DC converter. Check the sensor circuit for breaks and short circuits. Check the connectors and contacts of the sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0C38?

Yes, but get it checked soon

How much does it cost to fix P0C38?

The estimated repair cost for P0C38 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat