Control Module Performance
The P0607 code means the vehicle's onboard diagnostic system has detected: Control Module Performance. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $300 - $1500 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Intermittent engine performance issues
- Occasional stalling
- Multiple DTCs may set simultaneously
Probable Causes (Ranked by Likelihood)
- Degraded ECM internal components Very High
- Poor ECM power supply causing intermittent resets High
- ECM connector corrosion causing intermittent contact Moderate
- ECM thermal issues Low
Step-by-Step Diagnostic Procedure
-
Check ECM power and ground circuits for voltage drops
-
Inspect ECM connector for corrosion or bent pins
-
Monitor ECM operation during driving for intermittent resets
-
Check for excessive heat near the ECM mounting location
-
Replace the ECM if internal performance issues are confirmed
Frequently Asked Questions
Can I drive with code P0607?
Drive short distances only. Internal control module errors can cause unpredictable engine behavior.
Does P0607 mean I need a new ECM?
Not always. Some internal module errors can be resolved by reprogramming or reflashing the ECM with factory software. However, hardware failures (RAM, ROM, processor) typically require ECM replacement.
How much does an ECM replacement cost?
ECM replacement typically costs $300-$1500 including the part and programming. The ECM must be programmed with the correct calibration and vehicle options for your specific VIN.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P0607 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
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