P264E: A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1
The position sensor signal jumps or drops out intermittently. Usually a loose connector or a chafed wire in the harness.
What P264E means
P264E is a generic OBD-II powertrain code in the timing, cam & crank group. In plain English: the computer found an electrical fault in that circuit: an open, short or bad connection, or a failed component. Bank 1 is the side of the engine with cylinder 1 (inline engines only have bank 1).
- Check engine light
- Usually on
- Emissions-related
- No
- Limp mode possible
- Not typical
- Drive cycle to clear
- Not required
Get it fixed
Post this code once and get quotes from local mechanics. Free to post.
Makes the repair and parts links below specific to your car. Kept in this browser only.
Common causes
- 01Sensor connector not fully seatedMost likely
- 02Harness chafed against valve cover or cam carrierPossible
- 03Connector with intermittent contact under vibrationLess likely
Can I drive with P264E?
Usually yes, for a short time.
The car will often drive normally, but get it diagnosed soon. If you notice rough running, warning lights flashing, overheating or a burning smell, stop driving.
Why we rate it moderate
- Turns on the check engine light
Severity is our rule-based rating from the code’s flags in OBDex and the system it affects, not an inspection of your car. If the check engine light is flashing, or you notice overheating, low oil pressure, or brake or steering problems, stop driving and get help.
How to diagnose P264E
- 1
Confirm the code and save freeze-frame data
Read the codes with an OBD-II scan tool and note every code, not just P264E. Save the freeze-frame data (speed, load, temperature when the fault set) before clearing anything; it tells you when the fault happens.
- 2
Check for related codes first
Look for P265E, P266E, P267E. Related codes often share a cause; a circuit or sensor code usually needs fixing before a performance code like this one.
- 3
Test the circuit
Inspect the wiring and connector at the rocker arm position sensor a bank 1 and wiring harness for damage, corrosion or chafing. With a multimeter, check supply voltage, ground and signal against the specifications in the service manual for your vehicle.
- 4
Test the likely causes in order
Start with the most likely cause and work down: Sensor connector not fully seated; harness chafed against valve cover or cam carrier; connector with intermittent contact under vibration. Test before replacing parts.
- 5
Check for recalls and service bulletins
Look up recalls for your exact vehicle with its VIN, and ask a dealer about technical service bulletins (TSBs). Manufacturers sometimes issue software updates or extended warranties for known faults.
- 6
Clear the code and verify the repair
After the repair, clear the code and drive the car under the conditions in the freeze-frame data to confirm it does not return.
P264E repair cost estimate
Estimate, not a quote. Labor times are typical ranges for this code from OBDex, and $125/hr is an assumed rate. Shop rates and labor times vary by vehicle and region. Diagnosis time may be billed separately.
- DIY difficulty
- Moderate
- Good DIY job?
- Usually a shop job
Needs a scan tool and some experience with testing.
Parts and systems involved
- Rocker arm position sensor A bank 1
- Wiring harness
P264E FAQ
What does P264E mean?
P264E means “A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1”. The position sensor signal jumps or drops out intermittently. Usually a loose connector or a chafed wire in the harness.
Is P264E serious? Can I keep driving?
We rate P264E as moderate severity. Usually yes, for a short time. The car will often drive normally, but get it diagnosed soon. If you notice rough running, warning lights flashing, overheating or a burning smell, stop driving.
What causes P264E?
The most common causes, from most to least likely: Sensor connector not fully seated; Harness chafed against valve cover or cam carrier; Connector with intermittent contact under vibration. Test before replacing parts, because several causes can set the same code.
How much does it cost to fix P264E?
Typical labor is about $65–$250 at an assumed $125/hour shop rate, plus parts. That is an estimate, not a quote: labor times and rates vary by vehicle and region, and diagnosis may be billed separately.
Can I fix P264E myself?
DIY difficulty is moderate. Most owners leave this to a shop because it needs involved testing or specialist tools. Always confirm the cause before buying parts.
Will P264E clear itself?
If the fault was intermittent, the warning may go off once the computer stops seeing it, but the code stays in memory. Fix the cause; clearing the code alone doesn’t repair anything.