P0725 critical

Engine Speed Input Circuit Malfunction

The P0725 code means the vehicle's onboard diagnostic system has detected: Engine Speed Input Circuit Malfunction. This is a critical severity code.

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Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$100 - $350 (parts and labor)
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Common Symptoms

  • Check Engine Light illuminated
  • Transmission shifts erratically
  • Engine stalling during shifts
  • Harsh engagement from Park to Drive

Probable Causes (Ranked by Likelihood)

  • Faulty crankshaft position sensor providing bad RPM data to TCM Very High
  • Damaged CKP sensor wiring High
  • Failed CKP sensor reluctor ring Moderate
  • TCM engine speed input circuit fault Low

Step-by-Step Diagnostic Procedure

  1. Compare engine RPM on the scan tool to a tachometer for accuracy

  2. Inspect the crankshaft position sensor connector for damage

  3. Check CKP sensor wiring from the ECM to the TCM

  4. Monitor engine RPM signal stability at idle and during acceleration

  5. Replace the CKP sensor if signal is erratic or missing

Frequently Asked Questions

Can I drive with code P0725?

Drive short distances only. Engine Speed Input Circuit Malfunction can cause unsafe or unpredictable transmission behavior.

What causes P0725?

The most common cause is a faulty sensor or wiring issue. Faulty crankshaft position sensor providing bad RPM data to TCM is the most likely cause.

Is P0725 expensive to fix?

Typical repair costs range from $100 - $350 (parts and labor). Sensor replacement is the most common fix.

Sources

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

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