P062F
Internal Control Module EEPROM Error
ECM / control module
Generic OBD-II
High
What it means
P062F means the engine control module has detected a fault in its EEPROM — the long-term memory where it stores learned values and settings. Because the ECM relies on this data to run the engine, the fault can cause driveability problems or, in some cases, a hard-start or no-start. It's often triggered by a weak battery or poor power/ground connections, so check those before condemning the module.
High
Can I keep driving? Drive cautiously — a module memory fault can affect running and, in some cases, cause a hard-start or no-start; get it diagnosed before relying on the car.
Common symptoms
What you'll notice
- Check-engine light on
- Driveability problems or reduced power
- Lost adaptations/learned settings (rough idle after clearing)
- Hard starting or, in some cases, a no-start
Common causes
Most likely first
- Low battery voltage or a weak battery corrupting stored memoryLikely
- Poor ECM power or ground connectionsCommon
- Corrosion or moisture in the ECM connectorsCommon
- Internal EEPROM (long-term memory) fault in the moduleLess often
- Interrupted or failed reprogrammingLess often
How to diagnose & fix
Work through it in order
- Test the battery and charging system, and clean/tighten the battery terminals — low voltage is a common trigger.
- Inspect and clean the ECM power and ground connections and connectors.
- Clear the code and see whether it returns after a few drive cycles.
- Check for a manufacturer reflash/software update for the module.
- If it persists with good power and grounds, the ECM likely needs reprogramming or replacement.
FAQ
Quick answers
Is it safe to drive with P062F?+
Be cautious. The module reporting a long-term memory error can run erratically and may not restart reliably. Have it diagnosed before depending on the vehicle.
Can I just clear P062F?+
It may clear briefly, but if the battery/grounds are poor or the module's memory is failing it returns. Sort out the power supply first, then reassess the ECM.
Related codes
Often seen with P062F
Read & clear P062F yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX