Powertrain, generic (extended)

P25E0 "A" Camshaft Position - Stuck In Locked Position (Bank 2)

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

On engines with two cylinder banks, P25E0 is the bank 2 counterpart of P25DD: the intake camshaft actuator stays latched at its locking angle when the module wants it free to advance or retard. Because only one side is affected, the cam angles of the two banks no longer match, and the module may hold both sides in a fallback position. Ford's 2014 OBD-II code interpretation list for the Boss 302S V8 includes P25E0 among four lamp codes for a phaser stuck in its lock. A pin that fails to retract usually goes back to oil supply: too little pressure at that head, wrong viscosity, a clogged feed screen or a sticking control valve; less often the pin is jammed mechanically. CARB requires the OBD system to detect valve timing that cannot reach its target. Typical complaints are low power, rough idle and higher consumption.

Likely causes

Insufficient oil pressure at the bank 2 head, low level or clogged feed screen
Bank 2 intake oil control valve sticking
Lock pin mechanically jammed in the phaser

Symptoms

  • Check engine lamp on
  • Reduced power and rough idle
  • Higher fuel consumption

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–1,600
Time0.5–7 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

cam phaser a b2park lock pinoil control valve

Related codes

P25DDP25E1P25E2P0021P0020

References: performanceparts.ford.com, law.cornell.edu.