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.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $100 - $350 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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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
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?
Estimated repair costs range from $100 - $350 (parts and labor). Sensor replacement is the most common fix.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Compare engine RPM on the scan tool to a tachometer for accuracy
-
Inspect the crankshaft position sensor connector for damage
-
Check CKP sensor wiring from the ECM to the TCM
-
Monitor engine RPM signal stability at idle and during acceleration
-
Replace the CKP sensor if signal is erratic or missing
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Commonly Affected Vehicles
- 2003-2015 Ford F-150
- 2004-2016 Dodge Ram 1500
- 2005-2017 Chevrolet Silverado
- 2002-2014 Toyota Tundra
Related Codes
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