What are the common causes of P262B?

Module not shutting down on the power off timer. Control module software or calibration fault. Corroded module connector pins. Loss of power or ground to the module. CAN bus keeping the module awake.

Check power and ground at the control module. Inspect the module connector pins for corrosion. Check for modules holding the bus awake. Verify the latest module software. Look for aftermarket accessories keeping the module powered. Clear the code and retest.

P262B

Control Module Power Off Timer Performance

System: Computer output circuits (P code)
Lamp: Check Engine Light
Category: Powertrain - Computer and Auxiliary Controls

What it means

P262B means Control Module Power Off Timer Performance.

Where it lives

For P262B, start at the module the description names.

Check these first

Module not shutting down on the power off timer
Control module software or calibration fault
Corroded module connector pins
Loss of power or ground to the module
CAN bus keeping the module awake

What to do next

Check power and ground at the control module
Inspect the module connector pins for corrosion
Check for modules holding the bus awake
Verify the latest module software
Look for aftermarket accessories keeping the module powered
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.