P0601 — Internal control module memory checksum error

Code P0601 is a standard OBD-II diagnostic trouble code: Internal control module memory checksum error.

In our record, P0601 is reported most often on Chevrolet, Kia and Saturn vehicles , against powertrain and electrical failure patterns , across 2005–2021 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0601 across 8 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0601 8 patterns

2021 Kia Seltos

powertrain — Engine stalling and loss of power

2012 Chevrolet Silverado

electrical — Engine Control Module (ECM) Intermittent Failure

2009 Chevrolet Impala

powertrain — Sudden loss of engine power / limp mode with reduced power warning

2009 Saturn Aura

powertrain — Transmission Clutch Wave Plate Fracture (3/5/R)

2006 Chevrolet HHR

engine — Unexpected Engine Stall / Shutdown While Driving

2006 Hummer H3

engine — Cylinder head failure with soft metal intake valve seats

2005 Chevrolet Colorado

electrical — Vehicle stalling and no-start conditions

2005 Pontiac G6

electrical — Brake lights malfunction (inverted or non-responsive)

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →