P25E6 code meaning
"B" Camshaft Position - Stuck In Locked Position (Bank 2)
Powertrain system Generic code P25xx codes Check engine light
What P25E6 means
P25E6 tells that on bank 2 the exhaust cam phaser has not left its locked angle despite a command to adjust. The module then has one exhaust camshaft that can no longer be phased, which shifts valve overlap on that bank and can upset idle quality and the emissions balance between the two banks. Ford's 2014 list for the Boss 302S V8 includes P25E6 as a lamp code, together with the matching intake and bank 1 codes. The root causes resemble those of the other stuck-lock codes but should be checked on the bank 2 side specifically: oil feed and screen to that head, the bank 2 exhaust control valve and the phaser itself. CARB obliges OBD systems to flag VVT systems that do not reach their target angle. Expect the warning lamp, reduced power and possibly a rattle from the timing drive.
P25E6 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 7 hours
- Clears after repairAfter a drive cycle
Symptoms of P25E6
- Check engine lamp on
- Reduced power, uneven idle
- Rattle from the timing drive
Common causes of P25E6
- Most likelyRestricted oil feed or clogged screen to the bank 2 cylinder head
- PossibleBank 2 exhaust oil control valve stuck
- Less likelyLock pin seized in the bank 2 exhaust phaser
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Cam phaser b b2Park lock pinOil control valve
What each part of P25E6 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| E6 | The exact fault in that area. |
What to do next
- Note P25E6 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 P25E6
What does P25E6 mean?
P25E6 means ""B" Camshaft Position - Stuck In Locked Position (Bank 2)". P25E6 tells that on bank 2 the exhaust cam phaser has not left its locked angle despite a command to adjust. It is a generic code, so it means the same on every make.
Is it safe to drive with P25E6?
Drive gently and only to a workshop. With P25E6 the car can go into limp mode (reduced power) to protect itself.
Will P25E6 fail an emissions test?
Yes, it can. P25E6 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 P25E6 to fix?
Difficulty: hard. A typical repair takes 0.5 to 7 hours of work. This is a job for a workshop.
Will P25E6 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.