AutoCodes - Generic - P0186

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0186 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 the P0186 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.

|P0186 code tech notes

Replaced Fuel Temperature Sensor

|Cost of diagnosing the P0186 code

Labor: 1.0

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

|What are P0186 code possible symptoms?

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

|P0186 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 - Fuel Temperature Sensor 'B' Circuit Range/Performance -

|Need more information with the P0186 code?

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

|P0186 code information for specific makes

  • P0186 FORD Engine Fuel Temperature Sensor 'B' Circuit Range/ Performance
  • P0186 MERCEDES-BENZ Fuel Temperature Sensor 'B' Circuit Range/Performance

|Need help with a P0186 code?

Get the P0186 code diagnosed by a professional: Find a repair shop in your area

|P0186 code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0186 code? Have you replaced any parts?
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Repair Importance Level: 3
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