P0185 Mercedes-Benz Code - Fuel Temperature Sensor 'B' Circuit Malfunction
Quick Answer
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. Common causes include Faulty Fuel Temperature Sensor, Fuel Temperature Sensor harness is open or shorted, Fuel Temperature 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
- P0185 Mercedes-Benz indicates Fuel Temperature Sensor 'B' Circuit Malfunction.
- Common causes
- Common causes include Faulty Fuel Temperature Sensor, Fuel Temperature Sensor harness is open or shorted, Fuel Temperature 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 P0185 Mercedes-Benz Description
What are the Possible Causes of the DTC P0185 Mercedes-Benz?
- Faulty Fuel Temperature Sensor
- Fuel Temperature Sensor harness is open or shorted
- Fuel Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0185 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0185 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 P0185 Mercedes-Benz code?
Need more information on how to fix the P0185 Mercedes-Benz code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0185 Mercedes-Benz Code
1. What are the common symptoms of OBDII code P0185 in a Mercedes-Benz related to the Fuel Temperature Sensor 'B' Circuit Malfunction?
The common symptoms include poor fuel economy, rough idling, engine stalling, and issues with acceleration.
2. What are the possible causes of the OBDII code P0185 in a Mercedes-Benz?
Possible causes include a faulty fuel temperature sensor, damaged wiring or connectors, issues with the fuel temperature sensor circuit, or a problem with the engine control module (ECM).
3. How can I diagnose the Fuel Temperature Sensor 'B' Circuit Malfunction in my Mercedes-Benz?
You can diagnose this issue by using an OBDII scanner to retrieve the fault code, inspecting the sensor and its wiring for damage, and testing the sensor's resistance and voltage.
4. Can I continue driving my Mercedes-Benz with the P0185 code triggered?
It is not recommended to drive your vehicle with the P0185 code triggered, as it can lead to poor engine performance and potentially cause further damage to the vehicle.
5. How can I repair the Fuel Temperature Sensor 'B' Circuit Malfunction in my Mercedes-Benz?
Repairing this issue typically involves replacing the faulty fuel temperature sensor, repairing or replacing damaged wiring or connectors, and clearing the fault code with an OBDII scanner.
6. What are some tips to prevent the OBDII code P0185 from recurring in my Mercedes-Benz?
Regular maintenance of your vehicle, including checking the fuel system components, ensuring proper wiring connections, and using high-quality fuel, can help prevent the recurrence of the P0185 code.
7. Is it possible to reset the OBDII code P0185 in a Mercedes-Benz without repairing the issue?
While you can clear the fault code using an OBDII scanner, it is crucial to address the underlying cause of the code to prevent further issues with your vehicle.
8. Can a DIY enthusiast fix the Fuel Temperature Sensor 'B' Circuit Malfunction in a Mercedes-Benz?
Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the fuel temperature sensor or repair wiring issues associated with the P0185 code.
9. How long does it typically take to repair the OBDII code P0185 in a Mercedes-Benz?
The repair time can vary depending on the exact cause of the issue, but replacing the fuel temperature sensor and addressing related wiring problems can usually be completed within a few hours.
10. Will fixing the Fuel Temperature Sensor 'B' Circuit Malfunction improve the overall performance of my Mercedes-Benz?
Yes, addressing the P0185 code can help restore proper fuel temperature readings, leading to improved engine performance, fuel efficiency, and overall driving experience in your Mercedes-Benz.
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