P062F A control module found an error in its own stored memory (EEPROM)

Internal control module EEPROM error

P062F in short

P062F means a control module found an error in its own stored memory, called EEPROM. Bad power or grounds, voltage spikes or wrong software are the listed causes, and a weak battery is often involved. GM says to check the module's connections, power and grounds before replacing it. Stalling or no-start needs prompt attention.

Control modules keep calibration and learned data in a type of memory called EEPROM. P062F is set when a module's self-check finds that memory damaged or unreadable. The code can be stored in the engine computer or another module that shares the same code.

The reference lists causes as damaged or corroded wiring and connectors, wrong software or calibration changes, and low voltage or voltage spikes harming the module. General Motors bulletin PIP5609 has dealers inspect the engine module's connectors, power and grounds before replacing the module, and bulletin 05-06-04-060A explains that this family of codes can be shared by several modules.

Owner reports in the NHTSA record link the code to flat batteries, stalling and non-starting on GM and Nissan vehicles. In one report the dealer pointed at the chassis control module, not the engine computer, so the module that sets the code may differ. Those are owner narratives, not confirmed fixes.

Most likely causes

  1. Poor power or ground connection to the module

    Supported by vehicle data
    Why it ranks here
    General Motors tells dealers to inspect the engine control module connections, power and grounds first, and the reference lists damaged or corroded wiring and connectors.
    What would change this
    Rises if a voltage drop or corroded pin is found at the module. Falls if power and grounds test good.
    How to test the engine control module (ecm / pcm)

  2. Weak battery, charging fault or voltage spike

    Supported by vehicle data
    Why it ranks here
    The reference lists low system voltage or spikes. A Nissan owner reports repeated battery drain with the code, and two GM owners needed jump starts.
    What would change this
    Rises if the battery or charging test is poor. Falls if voltage is steady and the battery tests good.

  3. Failed control module memory

    Supported by vehicle data
    Why it ranks here
    GM's bulletin has the dealer replace the module when connections, power and grounds are fine. The reference says replacing or reprogramming is not guaranteed to fix it.
    What would change this
    Rises if the code returns with good power, ground and voltage. Falls if a power or ground problem is found.
    How to test the engine control module (ecm / pcm)

  4. Wrong or incompatible software or calibration

    Common general cause
    Why it ranks here
    The reference lists software used to alter calibration as a cause, which fits an aftermarket tune or a failed update.
    What would change this
    Rises if the vehicle has been tuned or reflashed recently. Falls if software is original.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all codes from every module, and note which module stored P062F and any other module or network codes.

    Low riskTool: scan tool that reads all modules

    • IfLow-voltage or charging codes are stored too

      It meansTest the battery and charging system first.

      Go to step 2

    • IfP062F is stored alone or with other control module codes

      It meansCheck the power and grounds at the module.

      Go to step 3

  2. Test the 12-volt battery and the charging system.

    Use cautionTool: battery tester, multimeter

    Warning:Batteries can release explosive gas and hold high current. Keep tools off the terminals, and keep sparks and flames away.

  3. Inspect the module connectors for corrosion and loose pins and test the power and ground feeds under load.

    Best left to a shopTool: multimeter, service information

    Warning:Disconnecting modules can set many codes and, on some vehicles, affect airbag and brake systems. Let a shop with service information do it.

Symptoms

  • Check engine light, sometimes with a traction or battery warning
  • Hard starting or needing a jump start
  • Stalling that clears when the throttle is pressed
  • Stalling on the road that will not restart Gets more serious: stop and have it checked.

How to fix

  1. Have the battery and charging system tested.

  2. Ask a shop to read every module and to check the module power and grounds before a module is replaced.

Parts and cost context

  • Engine control module (ECM / PCM):A replacement module usually needs programming. Check power, grounds and battery first. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

GMC

  • 2012 · Acadia

    Supported by vehicle data

    A 2012 Acadia owner reports no-starts and stalling with P062F, and says the dealer pointed to the chassis electronic control module. Owner narrative only.

  • PIP5609 (gmc)Status unverified

    Service engine soon with control module codes including P062F

    2016–2018yukon, sierra-1500 · issued · NHTSA 10151817

    Dealer inspects the engine control module connections, power and grounds, and replaces the module if no other issue is found.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Buick

  • 2012 · LaCrosse

    Supported by vehicle data

    A 2012 LaCrosse owner reports highway stalling and repeated jump starts with P062F. GM bulletin 05-06-04-060A covers this family of control module codes on the LaCrosse. Whether it is current is not verified.

  • 05-06-04-060A (buick)Status unverified

    Control module DTCs P0601-P0606, P062F, P06F3 and P1621 shared in multiple modules

    2008–2015lacrosse · issued · NHTSA 10113571

    Informational bulletin explaining that this family of control module codes can be shared by several modules.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Nissan

  • 2020 · Sentra

    Possible — needs testing

    A 2020 Sentra owner reports repeated battery drain and P062F described as an internal control module EEPROM error. Owner narrative only.

  • P0601Control module internal memory checksum error

    Same system Supported by vehicle data

    GM bulletins list P0601 with P062F as control module memory codes.

  • P0606A control module found a fault in its own processor or programming

    Same system Supported by vehicle data

    GM bulletins list P0606 with P062F as control module codes that can be shared by several modules.

All Engine computer (ECM/PCM) codes

P062F questions

Do I need a new computer for P062F?

Not first. General Motors tells dealers to check the module connections, power and grounds before replacing it, and low battery voltage is a reported cause.

Is P062F only an engine computer code?

No. GM says this code family can be stored by several modules, and one owner was told the chassis control module was at fault.

Sources and review

  1. P062F trouble code summary — TroubleCodes.net
  2. PIP5609: service engine soon with P0601-P0604, P0606, P062B, P062F, P0630, P16F3 or P262B — General Motors ,
  3. NHTSA complaint ODI 11222369 (2012 GMC Acadia) — NHTSA Office of Defects Investigation
  4. NHTSA complaint ODI 11253436 (2012 Buick LaCrosse) — NHTSA Office of Defects Investigation
  5. NHTSA complaint ODI 11592542 (2020 Nissan Sentra) — NHTSA Office of Defects Investigation
  6. 05-06-04-060A: Information on control module DTCs P0601, P0602, P0603, P0604, P0606, P062F, P06F3, P1621 shared in multiple modules — General Motors ,
Last reviewed
Written by
Saurabh K.
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