P2567 moderate

Engine Coolant Temperature Sensor Reference Voltage Circuit Low

The P2567 code means the vehicle's onboard diagnostic system has detected: Engine Coolant Temperature Sensor Reference Voltage Circuit Low. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
moderate
Estimated cost
$80 - $250 (parts and labor)
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Common Symptoms

  • Check Engine Light on
  • Inaccurate temperature gauge readings
  • Engine may run rich on cold starts
  • Poor fuel economy
  • Cooling fan may not operate correctly

Probable Causes (Ranked by Likelihood)

  • Faulty engine coolant temperature sensor Very High
  • Open or shorted reference voltage wire High
  • Corroded sensor connector Moderate
  • PCM reference voltage circuit failure Low

Step-by-Step Diagnostic Procedure

  1. Read freeze frame data and confirm P2567 is present

  2. Measure reference voltage at the coolant temperature sensor connector

  3. Test coolant temperature sensor resistance at various temperatures

  4. Inspect wiring from sensor to PCM for damage or corrosion

Frequently Asked Questions

What does P2567 mean?

P2567 indicates the reference voltage supplied to the engine coolant temperature sensor is reading below the normal range, affecting temperature monitoring accuracy.

Can I drive with a P2567 code?

You can drive short distances, but the engine management may not properly control fuel mixture and cooling fan operation. Get it checked soon.

How much does it cost to fix P2567?

Repairs typically cost $80 to $250. A sensor replacement is usually under $150, while wiring repairs may cost more.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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