P001B

A Camshaft Profile Actuator A Control Circuit Low Bank 1

Moderate severity

Low control voltage at the cam profile actuator (intake, profile A, bank 1). Typically a short to ground in the wiring or actuator coil.

Common causes

Wiring shorted to ground
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $90-880
Actuator coil shorted internally
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $90-880
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does P001B mean?

P001B means "A Camshaft Profile Actuator A Control Circuit Low Bank 1". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.

What are the most common causes of P001B?

wiring shorted to ground; actuator coil shorted internally; connector pins corroded - high contact resistance — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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