OBD Guide
ENFRDEESPT

P138D

Turbocharger/Supercharger Boost Control 'A' Temperature Too High

P138D is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Boost Control 'A' Temperature Too High. Common causes: turbocharger/supercharger malfunction, clogged intercooler. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Reduced engine power
  • Engine overheating
  • Unstable engine operation
  • Check Engine Light Illuminates
  • Noises from the turbocharger

Causes

  • Turbocharger/supercharger malfunction
  • Clogged intercooler
  • Charge temperature sensor malfunction
  • Problems with the cooling system
  • Clogged or damaged air ducts

How to Fix

  1. Check the condition of the turbocharger/supercharger
  2. Inspect and, if necessary, replace the intercooler
  3. Check boost temperature sensor
  4. Check the cooling system for leaks or blockages
  5. Inspect air ducts for damage or blockages

Related codes

P138CP138EP0234

FAQ

What does the P138D code mean?

P138D is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Boost Control 'A' Temperature Too High

What causes a P138D error code?

The most common causes of P138D include: Turbocharger/supercharger malfunction; Clogged intercooler; Charge temperature sensor malfunction; Problems with the cooling system.

How do I fix a P138D diagnostic trouble code?

To fix P138D: Check the condition of the turbocharger/supercharger. Inspect and, if necessary, replace the intercooler. Check boost temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P138D?

Limited driving only, diagnose soon

How much does it cost to fix P138D?

The estimated repair cost for P138D is $56–278. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat