P0601 on Chevrolet Impala
Internal Control Module Memory Checksum Error
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Chevrolet Impala context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0601.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0601 Means on Your Chevrolet Impala
P0601 is a diagnostic trouble code indicating: Internal Control Module Memory Checksum Error. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Chevrolet Impala Owner Reports
Source: NHTSA Complaints Database
"On my commute to work on the interstate my impala shut itself off. i was in the left lane when the car showed the reduced engine power on the information panel, it then fully disengaged all engine power and powersteering."
"While sitting at a stop light the information panel said reduced engine power as the light turned green. i held up numerous cars as i scanned the obd2 port to clear the code, once again the code read p0601. cleared it and it started right up."
"I was driving down a very busy street looking for a restaurant and my car made three dinging sounds indicating a issue. before i even could read what was displaying on my information panel the car lost all power steering and engine power."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Chevrolet Impala
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.