What does code P001B mean?

Q: What does code P001B mean?

A Camshaft Profile Actuator A Control Circuit Low Bank 1. P001B indicates that the powertrain control module has detected an abnormally low voltage on the control circuit for the bank 1 camshaft profile actuator, which is the solenoid that moves the camshaft to change valve lift or duration. The circuit is considered low when the voltage measured on the actuator control wire falls below the expected threshold, often indicating a short to ground, an open circuit, or a faulty actuator.

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P001B

P001BA Camshaft Profile Actuator A Control Circuit Low Bank 1

P001B indicates that the powertrain control module has detected an abnormally low voltage on the control circuit for the bank 1 camshaft profile actuator, which is the solenoid that moves the camshaft to change valve lift or duration. The circuit is considered low when the voltage measured on the actuator control wire falls below the expected threshold, often indicating a short to ground, an open circuit, or a faulty actuator.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.