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P0186 MERCEDES-BENZ Code - Fuel Temperature Sensor 'B' Circuit Range/Performance

- Code Popularity: 2,669 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 14, 2020
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|P0186 MERCEDES-BENZ code possible causes

  • Faulty Fuel Temperature Sensor
  • Fuel Temperature Sensor harness is open or shorted
  • Fuel Temperature Sensor circuit poor electrical connection

|How do I fix code P0186 MERCEDES-BENZ code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your car have Safety Recalls? → Check here

|P0186 MERCEDES-BENZ code tech notes

Replaced Fuel Temperature Sensor

|Cost of diagnosing P0186 MERCEDES-BENZ code

Labor: 1.0

The cost of diagnosing the P0186 MERCEDES-BENZ code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are P0186 MERCEDES-BENZ code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|P0186 MERCEDES-BENZ code description

The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

OBDII Code p0186 mercedes-benz - Fuel Temperature Sensor 'B' Circuit Range/Performance - AutoCodes.com
P0186 MERCEDES-BENZ Code - Fuel Temperature Sensor 'B' Circuit Range/Performance

|Need more information with the P0186 MERCEDES-BENZ code?

Need more information on how to fix the P0186 MERCEDES-BENZ code? Get Access to Factory Service Manuals

|Need help with a P0186 MERCEDES-BENZ code?

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|P0186 MERCEDES-BENZ code comments

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