P0338 OBD-II Trouble Code: Crankshaft Position Sensor A Circuit High Input

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Cost of diagnosing the P0338 code

P0338 is a diagnostic trouble code (DTC) for "Crankshaft Position Sensor A Circuit High Input". 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 for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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P0338 code definition

The P0338 Trouble Code indicates an error with the crankshaft position sensor A circuit high input.

What the P0338 code means

The powertrain control module has found that the crankshaft position sensor, or CPS, is not performing properly.

What causes the P0338 code?

A number of different things could cause the P0338 code to appear. The following are the common causes:

What are the symptoms of the P0338 code?

When a vehicle has a P0338 code stored, it can suffer from a number of different symptoms. The Check Engine Lamp might be illuminated. In addition, the engine might not start at all. The engine could misfire, or it could sound and feel rough when it is idling. The acceleration might feel choppy, and the overall engine performance could be negatively affected. In addition, the driver may notice that the fuel economy has diminished.

How does a mechanic diagnose the P0338 code?

A mechanic will make use of the OBD-II scanner by connecting it to the vehicle’s onboard computer. They will gather data about the vehicle and the code, or codes, that have been stored. They will then want to reset the codes and test the vehicle. They do this to make sure that the codes were not stored by mistake and that there is actually something wrong with the vehicle.

Common mistakes when diagnosing the P0338 code

If the mechanic does not do a thorough job of checking the timing elements of the vehicle when replacing a timing belt, it could lead to a misdiagnosis, as the engine might not start after the repair. They need to check every part of the system including the wiring and the connectors.

How serious is the P0338 code?

The P0338 can be a problem for your vehicle. If you are fortunate, you might only have to deal with a Check Engine Light that will not go off. However, many vehicles that have this code have a number of other problems. You might not be able to start your vehicle. If it does start, it could be much more difficult to drive. When you have any codes stored in your vehicle, it is important to have them checked out by a professional mechanic. They can fix the code and repair the vehicle.

What repairs can fix the P0338 code?

The following are some of the repairs that mechanics might use when they are trying to fix the P0338 code.

  • They will use the OBD-II sensor to learn more about the vehicle’s issues.
  • The mechanic will reset the codes and then test the vehicle to see if they return.
  • They check the connectors and wiring to make sure it is connected properly and not corroded.
  • Check the relator rings and replace if needed.
  • Check the timing belt and replace if needed.
  • Replace the powertrain control module. This is rarely the cause of the issue though.

Additional comments for consideration regarding the P0338 code

If you have a vehicle that has any codes stored, it is important to have them checked out as soon as possible by a mechanic. It might be true that older vehicles with a lot of miles on them could present false alarm codes, you do not want to take any chances with your vehicle. If it doesn’t start, or if the engine suddenly starts performing poorly, it can make getting around very difficult. It’s better to be safe rather than sorry. You want to make sure that you have all of the codes checked out and your vehicle repaired by a qualified mechanic.

Need help with a P0338 code?

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.

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Maxwell

15 years of experience
389 reviews
Maxwell
15 years of experience
Not my first experience with Maxwell, but it was just as good as the last.
2009 AUDI S5 - CHECK ENGINE LIGHT IS ON - CYPRESS, TEXAS

Peter

40 years of experience
1059 reviews
Peter
40 years of experience
Peter is a total professional. He knows a motor vehicle inside and out. He is punctual, courteous and honest. He will tell you if the work booked for your car is needed. I am totally satisfied with Peter's work ethic, and would recommend him to anyone.
2004 LEXUS ES330 - CHECK ENGINE LIGHT IS ON - PHOENIX, ARIZONA

Ricardo

9 years of experience
246 reviews
Ricardo
9 years of experience
He is the best! He gave me good advice and was really honest and helpful! I will recommend him to anyone! I can’t wait for him to have his own shop.
2009 HYUNDAI SONATA - CHECK ENGINE LIGHT IS ON - SAN PEDRO, CALIFORNIA

Isai

24 years of experience
224 reviews
Isai
24 years of experience
Isai is fantastic, I actually had him come by the day before to change out a Crankshaft Sensor but had a couple other questions in regards to other issues I'd been having with the car. He recommended that my drive belt needed to be changed and took the time to show me the cracks and obvious missing pieces in the belt that I had. For about 2-3 years the dealer had told me that the reason my belt was noisy was a faulty alternator clutch, after working with Isai, I'm pretty confident that the dealer just didn't know what they were doing. I would recommend him and YM to anyone.
2005 NISSAN ALTIMA - CHECK ENGINE LIGHT IS ON - SAN ANTONIO, TEXAS

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