OBD Codes List

Diagnostic reference · P25E1

P25E1

A Camshaft Position - Unable to Achieve Locked Position Bank 2

System
Speed and idle control (P code)
Lamp
Check Engine Light
Category
Powertrain - Computer and Auxiliary Controls

What it means

P25E1 means A Camshaft Position - Unable to Achieve Locked Position Bank 2.

Check these first

  • A bank 2 A camshaft phaser that cannot reach its locked position
  • Low engine oil pressure starving the bank 2 camshaft phaser
  • A stuck bank 2 camshaft phaser lock pin
  • A camshaft phaser solenoid not delivering oil on bank 2

What to do next

  1. Command the bank 2 A camshaft phaser lock on a scan tool
  2. Compare commanded and actual bank 2 camshaft position
  3. Check engine oil pressure and oil condition
  4. Test the bank 2 camshaft phaser solenoid circuit
  5. Replace the bank 2 A camshaft phaser if oil pressure and signal test good
  6. Clear the code and retest

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Updated

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