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P001A is a diagnostic trouble code (DTC) for ""A" Camshaft Profile Control Circuit/Open". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P001A code indicates that camshaft and crankshaft signals have malfunctioned and are out of sync. The powertrain control module, or PCM, notes the timing issue and sets the code.
P001A is the OBD-II generic code that appears when the PCM detects a noticeable lack of synchronization between the movement of the camshaft and the crankshaft. Because the engine needs gas inside the cylinder, which is what A camshaft valves manage, any issues with the valves are a serious problem. The engine uses intake valves to bring fuel into its cylinders. There are also exhaust valves, but all of the valves are run on the camshaft and if there is a code that indicates that the circuitry responsible for operating the camshaft, it will mean that a host of performance issues can occur.
There are several issues that can lead to the PCM noting the P001A code:
P001A code will typically have symptoms such as a poorly running engine, a no-start condition, reduced power in the engine, an engine that runs rough, and the appearance of the check engine light.
The P001A code is diagnosed by the technician using the OBD-II scanner. They ensure the code is present and look for any other codes that could be a sign of another issue. They use the freeze frame data too, and then clear the codes before retesting to see if the P001A appears. They will perform a visual inspection of any connections or wiring to ensure there are no open, shorts, corrosion or disconnections. They will make repairs as needed. They then use a scanner and digital ohm meter to test their camshaft's sensor and circuitry as well as that of the crankshaft and related components. The timing chain or belt may be tested as well.
It is not unusual for the technician to believe that it is a camshaft sensor that is the problem, without also considering issues such as the timing belt. This can also trigger the code and is something that needs to be considered during diagnostics and repair.
A P001A code can prevent the vehicle from operating safely or at all. It can reduce power and make it difficult maneuver unexpectedly. It can have a negative impact on the engine's performance, and is not something that should be ignored or left alone for a long period.
There are a few ways that the P001A code is addressed:
Because wiring is such a common cause behind this code, it is important that full diagnostics occur. The camshaft profile control circuit issue can have serious effects on the performance of the engine, and yet it can be very difficult to diagnose without the use of proper tools.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.