P264E code meaning
"A" Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic (Bank 1)
Powertrain system Generic code P26xx codes Check engine light
What P264E means
P264E covers a feedback signal from the position sensor of actuator A, bank 1, that drops out or jumps for short moments rather than staying low or high. Loose terminals, a cracked wire flexing with engine movement, or interference on an unshielded line are the usual reasons, and the fault may vanish when the vehicle is parked. CARB requires lift system inputs to be monitored for such rationality and continuity problems. No manufacturer documents P264E publicly. Because the lift controller depends on a steady reading, jumps can make it hunt or fall back to a fixed lift, which drivers notice as surging or uneven idle. Wiggle tests on the harness help locate it.
P264E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P264E
- MIL on, sometimes clearing by itself
- Surging or hesitation
- Uneven idle
Common causes of P264E
- Most likelyLoose or spread terminal in the sensor connector
- PossibleWire cracked inside the insulation by engine movement
- Less likelyElectrical interference on the signal line
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rocker arm position sensor a b1Wiring harness
What each part of P264E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 4E | The exact fault in that area. |
What to do next
- Note P264E 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 P264E
What does P264E mean?
P264E means ""A" Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic (Bank 1)". P264E covers a feedback signal from the position sensor of actuator A, bank 1, that drops out or jumps for short moments rather than staying low or high. It is a generic code, so it means the same on every make.
Is it safe to drive with P264E?
Drive gently and only to a workshop. With P264E the car can go into limp mode (reduced power) to protect itself.
Will P264E fail an emissions test?
Yes, it can. P264E 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 P264E to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P264E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.