OBD Guide

P0185

Fuel Temperature Sensor B Circuit

P0185 is an OBD-II diagnostic trouble code meaning: Fuel Temperature Sensor B Circuit. Common causes: fuel temperature sensor b malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Reduced engine power
  • Unstable engine idling

Causes

  • Fuel temperature sensor B malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the ECU

How to Fix

  1. Check the integrity of the sensor circuit (open/short circuit)
  2. Check the sensor connector for oxidation
  3. Measure the sensor resistance (compare with the nominal value)
  4. Replace the fuel temperature sensor if necessary
  5. Reset the error and check if it returns

Related codes

Error P0185 by Vehicle Brand

FAQ

What does the P0185 code mean?

P0185 is an OBD-II diagnostic trouble code that indicates: Fuel Temperature Sensor B Circuit

What causes a P0185 error code?

The most common causes of P0185 include: Fuel temperature sensor B malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the ECU.

How do I fix a P0185 diagnostic trouble code?

To fix P0185: Check the integrity of the sensor circuit (open/short circuit). Check the sensor connector for oxidation. Measure the sensor resistance (compare with the nominal value). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0185?

Limited driving only, diagnose soon

How much does it cost to fix P0185?

The estimated repair cost for P0185 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat