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P0338 Nissan Code - Crankshaft Position Sensor 'A' Circuit High

Quick Answer

The P0338 diagnostic trouble code (DTC) for Nissan vehicles indicates a problem with the Crankshaft Position Sensor 'A' Circuit High. Common causes include Faulty crankshaft position sensor, Damaged or corroded sensor wiring, Issues with the ECM. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0338 Nissan indicates Crankshaft Position Sensor 'A' Circuit High .
Common causes
Common causes include Faulty crankshaft position sensor, Damaged or corroded sensor wiring, Issues with the ECM.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0338 Nissan Description

The P0338 diagnostic trouble code (DTC) for Nissan vehicles indicates a problem with the Crankshaft Position Sensor 'A' Circuit High. This sensor is responsible for monitoring the position and rotational speed of the crankshaft in the engine. The sensor sends this information to the engine control module (ECM), which uses it to determine the ignition timing and fuel injection strategy.

OBDII Code P0338 Nissan - Crankshaft Position Sensor 'A' Circuit High
P0338 Nissan Code - Crankshaft Position Sensor 'A' Circuit High

Common Causes of P0338 Nissan

  1. Faulty crankshaft position sensor
  2. Damaged or corroded sensor wiring
  3. Issues with the ECM
  4. Poor electrical connections
  5. Engine timing belt or chain issues

Symptoms of P0338 Nissan

  1. Engine misfires
  2. Rough idle
  3. Engine stalling
  4. Difficulty starting the engine
  5. Reduced fuel efficiency

How to Fix P0338 Nissan

  1. Diagnose the issue - Use a scan tool to confirm the P0338 code and conduct a visual inspection of the sensor and wiring.
  2. Replace the crankshaft position sensor - If the sensor is found to be faulty, it will need to be replaced with a new one.
  3. Repair or replace damaged wiring - If the wiring is damaged or corroded, it will need to be repaired or replaced.
  4. Check and repair electrical connections - Ensure that all electrical connections related to the sensor are secure and in good condition.
  5. Clear the DTC - After completing the repairs, clear the DTC from the ECM memory and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0338 Nissan

The cost of repairing a P0338 code can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the cost of a new crankshaft position sensor for a Nissan vehicle ranges from $50 to $150. Labor costs can vary, but most auto repair shops charge between $80 and $150 per hour for labor. Therefore, the total repair cost for this issue could range from $150 to $400 or more, depending on the extent of the repairs needed. It's recommended to get a few quotes from different auto repair shops in your area to get a more accurate estimate.

What does this mean?

Tech Notes for P0338 Nissan

Sometimes and in some models, low battery voltage or a weak starter can trigger a Crankshaft Position Sensor code. Before replacing any parts, recharge or replaced battery.

When is the Code Detected?

The crankshaft position sensor (POS) signal sent to the Electronic Control Module (ECM) is high

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0338 Nissan Code

1. What are common symptoms of OBDII code P0338 in a Nissan related to the Crankshaft Position Sensor 'A' Circuit High?

- Common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0338 in a Nissan indicating a high circuit issue with the Crankshaft Position Sensor 'A'?

- Possible causes include a faulty crankshaft position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning engine control module (ECM).

3. How can I diagnose the issue related to OBDII code P0338 in a Nissan with the Crankshaft Position Sensor 'A' Circuit High?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, testing the sensor's voltage and resistance, and inspecting the sensor's wiring and connections for any issues.

4. Can a faulty Crankshaft Position Sensor 'A' cause other problems in addition to triggering OBDII code P0338 in a Nissan?

- Yes, a faulty sensor can lead to issues such as misfires, poor acceleration, and potentially damaging the catalytic converter over time.

5. Is it safe to continue driving my Nissan with OBDII code P0338 indicating a high circuit problem with the Crankshaft Position Sensor 'A'?

- It is not recommended to drive the vehicle for an extended period with this issue, as it can lead to further damage and potential safety hazards.

6. What is the typical repair process for resolving OBDII code P0338 in a Nissan due to a high circuit concern with the Crankshaft Position Sensor 'A'?

- The repair process generally involves replacing the faulty crankshaft position sensor, repairing any damaged wiring or connectors, and clearing the trouble code from the ECM.

7. Are there any preventive measures to avoid encountering OBDII code P0338 related to the Crankshaft Position Sensor 'A' Circuit High in a Nissan?

- Regularly inspecting and maintaining the sensor, as well as addressing any engine performance issues promptly, can help prevent this code from occurring.

8. Can a DIY enthusiast with basic automotive knowledge address OBDII code P0338 in a Nissan by themselves?

- Depending on the level of expertise, some individuals may be able to replace the crankshaft position sensor or check the wiring, but professional diagnosis and repair are recommended for accurate and reliable results.

9. How long does it typically take to repair OBDII code P0338 in a Nissan caused by a high circuit issue with the Crankshaft Position Sensor 'A'?

- The repair time can vary based on the extent of the issue and the availability of parts, but it generally takes a few hours for a mechanic to complete the repair.

10. Will resetting the ECM clear OBDII code P0338 related to the Crankshaft Position Sensor 'A' Circuit High in a Nissan?

- Resetting the ECM may temporarily clear the code, but if the underlying issue with the sensor or circuit remains unresolved, the code is likely to reappear.

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