P001D

A Camshaft Profile Actuator A Control Circuit/Open Bank 2

Q: Is it safe to drive with P001D?

Short-term yes, but the engine may not develop full power and can run rough, so avoid hard driving until it is repaired.

Q: Can I just clear P001D?

This is an open-circuit code, so it returns as soon as the ECM re-tests the actuator until the wiring or part is fixed.

Cam profile / valve lift control Generic OBD-II High

What it means

P001D means the ECM has detected an open (broken) circuit in the camshaft profile control actuator on bank 2 — the device that switches the engine between low- and high-lift cam profiles. With the actuator circuit open, the cam profile can't change on command, so the engine may lose top-end power and run roughly, though it will normally still start and drive.

High

Can I keep driving? Usually driveable, but the engine may lose high-rpm power and run rough; get it checked before longer trips.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Reduced power, especially at higher rpm when the cam profile should switch
Rough running or unstable idle
Noticeably weaker acceleration

Common causes

Most likely first

Open circuit in the camshaft profile control actuator wiringLikely
Corroded or disconnected actuator/solenoid connectorCommon
Failed camshaft profile control actuator or oil control valve on bank 2Common
Failed ECM driver (least likely)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data, then inspect the bank 2 profile actuator connector and harness for an open or corrosion.
Measure the actuator/solenoid resistance and check its supply and ground against spec.
Confirm the ECM is commanding the actuator; repair the open circuit or replace the actuator as indicated.
Only after the circuit and actuator check out, suspect the ECM. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P001D?+

Short-term yes, but the engine may not develop full power and can run rough, so avoid hard driving until it is repaired.

Can I just clear P001D?+

This is an open-circuit code, so it returns as soon as the ECM re-tests the actuator until the wiring or part is fixed.

Read & clear P001D yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX