ECM/TCM Incompatible
The P0614 code means the vehicle's onboard diagnostic system has detected: ECM/TCM Incompatible. This is a critical severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- hard
- Estimated cost
- $100 - $800 (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 on
- Engine and transmission systems not communicating
- Vehicle may enter limp mode
- Possible no-start condition
Probable Causes (Ranked by Likelihood)
- Mismatched ECM and TCM software versions Very High
- Wiring damage or corrosion in the circuit High
- Poor electrical connection at module or component Moderate
- ECM or control module internal failure Low
Common Fixes by Vehicle
What techs usually find when diagnosing P0614 on specific vehicles — tap your vehicle for the fix and the exact part:
2008+ Toyota/Lexus/Scion (all models) easy (need shop) DIY
P0614 means the ECM and TCM have mismatched VIN/calibration -- very common after replacing either module with a used part. A dealer or shop with TIS/IDS/Scantool Pro must reprogram the new module to the VIN. Swap-and-go doesn't work on 2008+ vehicles.
Labor: 1-2 hours at dealer2011-2019 Ford F-150/Explorer 6R80 moderate DIY
On Ford, a failed TCM often throws P0614. Check the TCM power feeds (F1.10 and F2.32 on F-150) before replacing. If module is confirmed bad, a remanufactured TCM with your VIN flashed is ~$450 via Solo Auto Electronics. Note: this module must be programmed to your VIN before the car will run. A generic parts search returns blank or donor units, so order it through a dealer or a rebuilder that programs to your VIN, or have a shop flash it after installation.
Labor: 2 hours + programming2007-2018 Chevrolet Silverado/Tahoe 6L80 moderate DIY
GM/6L90 TCM water damage is common -- the module mounts to the transmission and cracked trans pan seal allows fluid in. Check TCM connector for fluid contamination. Replace TCM and the transmission pan seal together to prevent repeat. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.
Labor: 3-4 hoursFrequently Asked Questions
What does P0614 mean?
P0614 indicates a fault in the ecm/tcm incompatible. This is an electronic control system code that affects the ECM's ability to manage the associated component or system.
Is P0614 a serious code?
Yes, this code indicates a critical control circuit issue that can affect vehicle operation and should be addressed immediately.
Can a low battery cause ECM-related codes?
Yes. Low battery voltage can cause various ECM and module communication codes. Always verify the battery is fully charged and the charging system is working before diagnosing electronic control module codes.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
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Use a scan tool to read data related to ECM/TCM Incompatible
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Inspect all related wiring, connectors, and grounds for damage, corrosion, or loose connections
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Measure circuit voltage, resistance, and continuity to identify the fault type
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Check for technical service bulletins related to this code for your specific vehicle
Sources 2
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)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2008-2018 Ford F-150
- 2010-2020 Toyota Camry
- 2009-2019 Honda Accord
- 2011-2020 Chevrolet Silverado
Related Codes
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