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P000A Fault Code (Causes & Fixes) "A" Camshaft Position Slow Response Bank 1

Updated: Jan 9

P000A is an OBD fault code that stands for "(A) Camshaft position slow response bank 1". This fault can occur for a variety of reasons.

A P000A trouble code means the camshaft's position varies from the position expected by the powertrain control module (PCM). The letter "A" shows that the problem is with the intake valves, and the word "Bank 1" shows that it is on the bank 1 side of the engine.

This code may be accompanied by a P0010 fault, indicating that bank 1 is the cause of the problem.

The fault codes P000B, P000C, and P000D are also related. P0011, P0012, P0013, P0014, P0015, P0020, P0021, P0022, P0023, P0024, and P0025 are some more codes that may occur.

If a DTC is related to the powertrain, it will begin with the letter "P" when read by an OBD reader. Fault codes in the P0xxx format are generic fault codes.

Table of Contents:


The Meaning of a P000A Fault Code

Vehicle camshafts open and shut the intake and exhaust valves on the engine's cylinders to keep the engine running smoothly. The camshaft timing is critical for the engine to run properly.

The timing of this action is slower than anticipated when the vehicle's computer produces the OBD code P000A.

  • In this case the fault is with the intake valves in bank 1, as shown by the letter "A".

  • The exhaust valves are denoted by the letter "B".

The PCM (powertrain control module) keeps a record of the camshaft's current and future positions.

During the diagnostic phase, the PCM detects a shortfall if the camshaft position change is less than it should be. If the variations in response time continue over time, a P000A code will be issued.

Possible Causes of a P000A Code

There are various potential causes for this code due to the large number of moving components in the engine and camshaft system. The most frequent causes of a P000A fault code are as follows.

  • A corroded or damaged connector, wire, or harness

  • A defective PCM or ECM

  • Camshaft position actuator solenoid failure

  • Camshaft position sensor failure

  • Fuel cap is loose

  • Oil pressure is low (due to blockage in the oil galleries, faulty oil pump, low oil level, etc.)

  • Timing chain or belt problems

  • VCT (variable cam timing) phaser failure

  • VCT unit binding

A variety of factors might be causing your car to produce a P000A code.

Engine timing issues need the use of specialised equipment to assess engine timing and accurately reset the timing when all repairs are done.

Signs & Symptoms of P000A

Typically, the main indication of a P000A fault code is the illumination of the MIL (check engine light).

You may also notice the following:

  • Increase or change in engine noise

  • Poor engine performance

  • Higher emissions

Other fault codes, such as P0010 or other codes, may occur alongside a P000A code.

Is It Serious?

The vehicle may seem to function well and without any obvious significant problems.

However, if the problem is not resolved quickly, serious damage to components such as the camshaft follower may occur, necessitating expensive future repairs.

It is recommended that you do not drive the vehicle until it has been diagnosed and repaired.

Diagnosing the P000A Trouble Code

Begin the diagnostic process by validating the P000A code and fixing any previously set codes. Check the engine oil level and top it up if needed.

The codes should then be cleared, and the car should be examined again to see whether the problem persists. If the code occurs again, the following steps may be necessary.

  • Camshaft adjustment valve testing.

  • Examine the camshaft position actuator solenoid.

  • Check the oil levels in the engine and compare them to the manufacturer's recommendations.

  • Test the engine oil pressure.

  • Check the trouble code using a professional OBD scanner.

  • Visually inspect the camshaft advance mechanism.

  • Check for blockages in the oil channels.

  • Visually inspect the wiring and circuits for signs of damage or corrosion.

Common Diagnostic Mistakes

Low oil pressure is often overlooked as the primary cause of this error code, despite the fact that the problem might be with the camshaft mechanism or other components.

If any of the oil pump connections deteriorate or any of the channels get blocked, the lower oil pressure may result in the generation of a camshaft position slow response code.

As a consequence, it's advised to check the oil level and, if required, refill it to determine whether this fixes the issue.