P062F code meaning
Internal Control Module EEPROM Error
Powertrain system Generic code P06xx codes Check engine light
What P062F means
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 gasoline 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.
P062F at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P062F
- 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
Common causes of P062F
- Most 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
- Less likelyMemory defect in the module (write cycles, ageing)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleControl module power supplyMain relay
What each part of P062F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6 | Area: computer (engine control module) and output circuits. |
| 2F | The exact fault in that area. |
What to do next
- Note P062F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P062F
What does P062F mean?
P062F means "Internal Control Module EEPROM Error". Learned values, adaptations, counters and configuration are saved to non-volatile memory (EEPROM or flash-emulated NVM) when the module shuts down. It is a generic code, so it means the same on every make.
Is it safe to drive with P062F?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P062F fail an emissions test?
Yes, it can. P062F is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P062F to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will P062F clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.