OBD Guide

P15CA

Electric A/C Compressor Sensors Signal Message Counter Incorrect

P15CA is an OBD-II diagnostic trouble code meaning: Electric A/C Compressor Sensors Signal Message Counter Incorrect. Common causes: malfunction of air conditioning compressor sensors, problems with wiring or connectors. Estimated repair cost: $17–89.

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

Symptoms

  • Inoperative or poorly functioning air conditioner
  • Periodic shutdown of the air conditioning compressor
  • Check Engine Light Illuminates
  • Reduced interior cooling efficiency
  • Unusual noises from the compressor

Causes

  • Malfunction of air conditioning compressor sensors
  • Problems with wiring or connectors
  • Air conditioning control module malfunction
  • Sensor power problems
  • Software error in the control unit

How to Fix

  1. Check the condition of the compressor sensors
  2. Inspect wiring and connectors for damage
  3. Check sensor power supply
  4. Scan the system for other errors
  5. If necessary, replace faulty sensors

Related codes

FAQ

What does the P15CA code mean?

P15CA is an OBD-II diagnostic trouble code that indicates: Electric A/C Compressor Sensors Signal Message Counter Incorrect

What causes a P15CA error code?

The most common causes of P15CA include: Malfunction of air conditioning compressor sensors; Problems with wiring or connectors; Air conditioning control module malfunction; Sensor power problems.

How do I fix a P15CA diagnostic trouble code?

To fix P15CA: Check the condition of the compressor sensors. Inspect wiring and connectors for damage. Check sensor power supply. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P15CA?

Yes, but get it checked soon

How much does it cost to fix P15CA?

The estimated repair cost for P15CA is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat