P0338 Code - Crankshaft Position Sensor 'A' Circuit High Input
Quick Answer
The Crankshaft position sensor also known as the crank position sensor is an electronic device used in an engine to record the rate at which the crankshaft is spinning. Common causes include Faulty crankshaft position sensor, Crankshaft position sensor harness is open or shorted, Crankshaft position sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0338 indicates Crankshaft Position Sensor 'A' Circuit High Input.
- Common causes
- Common causes include Faulty crankshaft position sensor, Crankshaft position sensor harness is open or shorted, Crankshaft position sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0338 Description
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.
What are the Possible Causes of the DTC P0338?
- Faulty crankshaft position sensor
- Crankshaft position sensor harness is open or shorted
- Crankshaft position sensor circuit poor electrical connection
- Signal plate may be damage
- Starter motor may be faulty
- Starting system circuit
- Dead or weak battery
How to Fix the DTC P0338?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0338 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P0338 Buick — Crankshaft Position Sensor Circuit High Duty Cycle
- P0338 Cadillac — Crankshaft Position Sensor Circuit High Duty Cycle
- P0338 Chevrolet — Crankshaft Position Sensor Circuit High Duty Cycle
- P0338 Ford — Crankshaft Position Sensor 'A' Circuit High
- P0338 GMC — Crankshaft Position Sensor Circuit High Duty Cycle
- P0338 Hyundai — Crankshaft Position Sensor 'A' Circuit High Input
- P0338 Infiniti — Crankshaft Position Sensor 'A' Circuit High
- P0338 KIA — Crankshaft Position Sensor (CKP) 'B' Circuit High Input
- P0338 Lexus — Crankshaft Position Sensor 'A' Circuit High Input
- P0338 Mercedes-Benz — Crankshaft Position Sensor 'A' Circuit High Input
- P0338 Nissan — Crankshaft Position Sensor 'A' Circuit High
- P0338 Scion — Crankshaft Position Sensor 'A' Circuit High Input
- P0338 Toyota — Crankshaft Position Sensor 'A' Circuit High Input
Frequently Asked Questions about P0338 Code
1. What are the common symptoms of OBDII code P0338 (Crankshaft Position Sensor 'A' Circuit High Input)?
- Common symptoms include engine misfires, rough idling, stalling, and difficulty starting the vehicle.
2. What can cause OBDII code P0338 to trigger?
- The code can be triggered by a faulty crankshaft position sensor, wiring issues, or a malfunction in the engine control module.
3. How can I diagnose the cause of OBDII code P0338?
- Diagnosing the code typically involves testing the crankshaft position sensor, inspecting its wiring for damage, and checking the engine control module for faults.
4. Is it safe to drive with OBDII code P0338 active?
- It is not recommended to drive with this code active, as it can lead to engine performance issues and potential breakdowns.
5. Can a faulty crankshaft position sensor cause OBDII code P0338?
- Yes, a faulty crankshaft position sensor is a common cause of this code, as it can send incorrect signals to the engine control module.
6. How can I repair OBDII code P0338?
- Repairing the code typically involves replacing the crankshaft position sensor, repairing any damaged wiring, and clearing the code from the engine control module.
7. Are there any DIY tips for fixing OBDII code P0338?
- DIY tips include checking the sensor's connection, inspecting the wiring for visible damage, and ensuring the sensor is properly aligned and secured.
8. Can weather conditions affect the triggering of OBDII code P0338?
- Extreme weather conditions can sometimes affect the performance of the crankshaft position sensor, leading to the triggering of this code.
9. How long does it take to repair OBDII code P0338?
- The repair time can vary depending on the exact cause of the code, but it typically takes a few hours to diagnose and replace the faulty sensor.
10. Will OBDII code P0338 cause permanent damage to the vehicle if left unrepaired?
- Ignoring this code can lead to further engine damage and decreased performance over time, so it is best to address the issue promptly.
Discuss the causes and fixes for P0338 OBDII Code
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What model and year is your vehicle? You probably have to replace the crankshaft position sensor
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