Engine Speed Input Circuit Malfunction
What does P0725 mean?
The P0725 code means the vehicle's onboard diagnostic system has detected: Engine Speed Input Circuit Malfunction. This is a critical severity code.
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
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Compare engine RPM on the scan tool to a tachometer for accuracy
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Inspect the crankshaft position sensor connector for damage
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Check CKP sensor wiring from the ECM to the TCM
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Monitor engine RPM signal stability at idle and during acceleration
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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.