P001A - OBD II Trouble Code

January 31, 2017

Our automotive experts have put together the following information about the P001A diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P001A code.

OBD II Fault Code

  • OBD II P001A

OBD-II Code Decreased engine performance is defined as a "A" Camshaft Profile Control Circuit/Open

Newer engines have valves that are electro-hydraulically controlled instead of being driven by a timing belt or chain. This improves fuel efficiency and engine performance. When the engine control module (PCM) detects that the valves are not being operated as desired, it will set code P001A.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Increased fuel consumption

Common Problems That Trigger the P001A Code

  • Camshaft variable timing solenoid failure
  • Engine oil level is too low
  • The engine oil does not meet the manufacturer's requirements
  • Variable valve timing actuator failure

Common Repairs Needed for the P001A Code

About the Author

Brad Kava is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair.

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