OBD Guide
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B10EA

Positive Temperature Coefficient Heater Circuit Short

B10EA is an OBD-II diagnostic trouble code meaning: Positive Temperature Coefficient Heater Circuit Short. Common causes: wiring harness damage, ptc heater malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The heating system does not work
  • Check Engine light comes on
  • Reduced system efficiency associated with the heater

Causes

  • Wiring harness damage
  • PTC heater malfunction
  • Problems with the control module
  • Short circuit in the circuit

How to Fix

  1. Check wiring harness for damage
  2. Check PTC heater resistance
  3. Check the control module for errors
  4. Replace faulty components

Related codes

B10EBB10EC

FAQ

What does the B10EA code mean?

B10EA is an OBD-II diagnostic trouble code that indicates: Positive Temperature Coefficient Heater Circuit Short

What causes a B10EA error code?

The most common causes of B10EA include: Wiring harness damage; PTC heater malfunction; Problems with the control module; Short circuit in the circuit.

How do I fix a B10EA diagnostic trouble code?

To fix B10EA: Check wiring harness for damage. Check PTC heater resistance. Check the control module for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B10EA?

Limited driving only, diagnose soon

How much does it cost to fix B10EA?

The estimated repair cost for B10EA is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat