OBD Guide
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P1EC9

A/C Compressor Motor Instantaneous High Current

P1EC9 is an OBD-II diagnostic trouble code meaning: A/C Compressor Motor Instantaneous High Current. Common causes: air conditioning compressor malfunction, short circuit in compressor control circuit. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Air conditioner doesn't work
  • Compressor overheating
  • The air conditioning indicator is flashing
  • Reduced engine power when the air conditioner is turned on
  • Burning smell from the engine compartment

Causes

  • Air conditioning compressor malfunction
  • Short circuit in compressor control circuit
  • Compressor relay problems
  • Control unit malfunction
  • Wiring harness damage

How to Fix

  1. Check the air conditioning compressor for mechanical damage
  2. Check compressor control circuit for short circuit
  3. Check compressor relay
  4. Check the operation of the control unit
  5. Inspect the wiring harness for damage

Related codes

P1ECAP1ECB

FAQ

What does the P1EC9 code mean?

P1EC9 is an OBD-II diagnostic trouble code that indicates: A/C Compressor Motor Instantaneous High Current

What causes a P1EC9 error code?

The most common causes of P1EC9 include: Air conditioning compressor malfunction; Short circuit in compressor control circuit; Compressor relay problems; Control unit malfunction.

How do I fix a P1EC9 diagnostic trouble code?

To fix P1EC9: Check the air conditioning compressor for mechanical damage. Check compressor control circuit for short circuit. Check compressor relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1EC9?

Yes, but get it checked soon

How much does it cost to fix P1EC9?

The estimated repair cost for P1EC9 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat