Skip the auto shop - Our mechanics make house calls

P001D OBD-II Trouble Code: “A” Camshaft Profile Control Circuit/Open

Check Engine Light

P001D code definition

“A” Camshaft Profile Control Circuit/Open

What the P001D code means

This diagnostic trouble code is an indication that the crankshaft and camshaft signals are out of time by some measure. When this happens the Power Control Module (PCM) stores the P001D trouble code and triggers the Check Engine Light.

What causes the P001D code?

The following are causes for the P001D trouble code:

  • Bad camshaft sensor
  • Bad crankshaft sensor
  • Damaged wires to the camshaft sensor
  • Loose or broken timing chain tensioner
  • Timing belt has jumped a tooth due to wear
  • Time chain worn out
  • A loose or missing harmonic balancer bolt

What are the symptoms of the P001D code?

If the crankshaft and camshaft signals are out of time and the P001D trouble code is present, the driver may experience the engine running poorly after starting, with a lack of power. It is also possible for the car to crank, but not run. The Check Engine Light should be on while these symptoms are present.

How does a mechanic diagnose the P001D code?

First, retrieve the trouble codes and freeze frame data stored on by the Power Control Module (PCM), using the OBD-II scanner. Inspect the wiring and connector for any breaks, shorts, or corrosion. If you have a scope, check the camshaft sensor pattern.

If the camshaft pattern is missing, you may have a bad camshaft sensor. A check of the harmonic balancer (crankshaft pulley) and camshaft gear tone rings should be done as well.

Also, check the timing belt or timing chain for wear that could be causing the chain or belt to be out of time. The timing chain/bolt tensioner should be inspected as well to make sure the timing chain/belt has the proper tension so it will not jump time.

If one or more of these components are damaged, repair as necessary. If all of these timings are in working order, the camshaft sensor will need to be replaced.

Common mistakes when diagnosing the P001D code

It is common for the camshaft sensor to be replaced before the timing chain/belt tensioner is inspected for breaks.

Another common mistake is not checking the timing chain/belt for stretching, as this will trigger the P001D code as well.

How serious is the P001D code?

The P001D trouble code could be considered serious because the car may not start, or lack power when power is necessary to maneuver out of the way of trouble. With the P001D trouble code present, the vehicle should not be driven until the necessary repairs have been completed.

What repairs can fix the P001D code?

Additional comments for consideration regarding the P001D code

It is important not to rush the diagnosis of this code, to ensure that all components of the camshaft sensor are inspected properly. Check the harmonic balancer (crankshaft pulley) for damage and always check the connector and wiring before replacing the sensor. If you have a scope, use it to look at the patterns of the camshaft and crankshaft to help with accurate diagnosis of the camshaft sensor.

Need help with a P001D code?

YourMechanic offers certified 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...


Related questions

Q: Misfire and P0420

Hello - the P0420 and the inconsistent waveform for the post-cat O2 sensor might be related to your failing intake manifold gasket issue. If tiny droplets of coolant are being sucked into the engine - one failure mode for this...

Q: just bought a 2008 kia spectra5 . drove it about 60 miles check engine light came on code is po700, po 755 but shifts fine car run

The p0700 code is more of a general information code, while the p0755 code is much more specific. The p0755 code refers to the 2-4 shift solenoid in the transmission. The code can set due several possible issues. Low fluid,...

Q: Could this be the TCM causing the problem?

Yes, no start in the scenario you are describing is possible especially if Code U1000 has set, along with other codes such as P0717, but there are multiple code scenarios or combinations. One quick strategy is to pull and visually...