P062FInternal Control Module EEPROM Error
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Learned values, adaptations, counters and configuration are saved to non-volatile memory (EEPROM or flash-emulated NVM) when the module shuts down. P062F means this memory failed a check: GM and GM Europe test at start-up whether the last write at shutdown completed, GM's 6.6 L diesel checks a checksum per data block and whether sectors can be erased, Ford's diesel reports read, write or erase errors (5 s). Lamp behaviour varies: GM petrol engine modules after two trips, the Duramax 2014 and Saab 2.0 L turbo in the first trip, GM transmission modules and GM Europe's 1.6 L turbo without it. Most often the shutdown was interrupted – battery disconnected, voltage dip, main relay dropping out too early. Learned values are lost and relearned. The code also appears in transmission and other modules.
- What you may notice
- Check engine or service lamp (depending on the maker, sometimes after two trips)
- Learned values lost: rough idle or harsh shifts until relearned
- Often no driveability symptoms
- Likely causes
- LikelyShutdown interrupted (battery disconnected, voltage dip, main relay drops out too early)
- PossibleWeak battery, poor ground or supply at the module
- PossibleSoftware fault or incomplete programming
- RareMemory defect in the module (write cycles, ageing)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.