OBD Guide

P0C39

DC/DC Converter Temperature Sensor A Range/Performance

P0C39 is an OBD-II diagnostic trouble code meaning: DC/DC Converter Temperature Sensor A Range/Performance. Common causes: dc/dc converter temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced efficiency of on-board electronics
  • Hybrid system power limitation
  • DC/DC converter overheating
  • Incorrect temperature readings in the diagnostic system

Causes

  • DC/DC converter temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Malfunction of the DC/DC converter itself
  • Problems with the control unit software

How to Fix

  1. Check the condition of the temperature sensor of the DC/DC converter
  2. Check the integrity of the sensor circuit and the quality of connections
  3. Test the operation of the DC/DC converter
  4. If necessary, replace the temperature sensor
  5. Update the control unit software if necessary

Related codes

Error P0C39 by Vehicle Brand

FAQ

What does the P0C39 code mean?

P0C39 is an OBD-II diagnostic trouble code that indicates: DC/DC Converter Temperature Sensor A Range/Performance

What causes a P0C39 error code?

The most common causes of P0C39 include: DC/DC converter temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Malfunction of the DC/DC converter itself.

How do I fix a P0C39 diagnostic trouble code?

To fix P0C39: Check the condition of the temperature sensor of the DC/DC converter. Check the integrity of the sensor circuit and the quality of connections. Test the operation of the DC/DC converter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0C39?

Yes, but get it checked soon

How much does it cost to fix P0C39?

The estimated repair cost for P0C39 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat