P0338 Mercedes-Benz 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 Mercedes-Benz 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 Mercedes-Benz 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 Mercedes-Benz?
- 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 Mercedes-Benz?
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 Mercedes-Benz 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.
Need more information about the P0338 Mercedes-Benz code?
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Need Help with the Code?
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Frequently Asked Questions about P0338 Mercedes-Benz Code
1. What are common symptoms of OBDII code P0338 in a Mercedes-Benz related to the Crankshaft Position Sensor 'A' Circuit High Input?
The common symptoms include engine misfires, rough idling, stalling, difficulty starting the engine, and poor acceleration.
2. What are the possible causes of OBDII code P0338 in a Mercedes-Benz?
The code P0338 can be triggered by issues such as a faulty crankshaft position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module.
3. How can a faulty crankshaft position sensor be diagnosed in a Mercedes-Benz with OBDII code P0338?
A technician can use a multimeter to test the resistance of the sensor, check for proper voltage supply to the sensor, and inspect the sensor for any physical damage or contamination.
4. What is the typical repair process for resolving OBDII code P0338 in a Mercedes-Benz?
The repair process usually involves replacing the faulty crankshaft position sensor, repairing any damaged wiring or connectors, and clearing the trouble codes from the engine control module.
5. Are there any DIY tips for addressing OBDII code P0338 in a Mercedes-Benz?
While it's recommended to have a professional diagnose and repair this issue, DIY enthusiasts with experience in automotive repair may attempt to replace the crankshaft position sensor themselves following manufacturer guidelines.
6. Can driving with OBDII code P0338 in a Mercedes-Benz cause further damage to the vehicle?
Continuing to drive with this code may lead to more severe engine performance issues, potential stalling or complete engine failure, so it's best to address the problem promptly.
7. How long does it typically take to repair OBDII code P0338 in a Mercedes-Benz?
The repair time can vary depending on the extent of the issue and the availability of parts, but it usually takes a few hours to replace the crankshaft position sensor and clear the trouble codes.
8. Is it safe to drive a Mercedes-Benz with OBDII code P0338 if the symptoms are not severe?
It is generally not recommended to drive the vehicle with this code present, as it can lead to unpredictable engine behavior and potentially unsafe driving conditions.
9. Can extreme weather conditions affect the triggering of OBDII code P0338 in a Mercedes-Benz?
Extreme temperatures or moisture can sometimes exacerbate issues with the crankshaft position sensor or its circuit, leading to the triggering of code P0338 in a Mercedes-Benz.
10. What is the cost range for repairing OBDII code P0338 in a Mercedes-Benz at a repair shop?
The cost of repairing this issue can vary depending on the labor rates of the repair shop, the cost of parts, and any additional repairs needed, but it typically ranges from $200 to $500.
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