P0185 Code - Fuel Temperature Sensor 'B' Circuit Malfunction
Quick Answer
The P0185 diagnostic trouble code (DTC) indicates a malfunction in the Fuel Temperature Sensor 'B' circuit. Common causes include Damaged wiring or connectors in the Fuel Temperature Sensor 'B' circuit, Faulty Fuel Temperature Sensor 'B', ECM malfunction. 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 indicates Fuel Temperature Sensor 'B' Circuit Malfunction.
- Common causes
- Common causes include Damaged wiring or connectors in the Fuel Temperature Sensor 'B' circuit, Faulty Fuel Temperature Sensor 'B', ECM malfunction.
- 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.
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Code P0185 Description
The P0185 diagnostic trouble code (DTC) indicates a malfunction in the Fuel Temperature Sensor 'B' circuit. This sensor is responsible for measuring the temperature of the fuel in the fuel tank. The information gathered by the sensor is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When this sensor malfunctions, it can lead to a variety of issues that can affect the vehicle's performance.
Common Causes of P0185
- Damaged wiring or connectors in the Fuel Temperature Sensor 'B' circuit
- Faulty Fuel Temperature Sensor 'B'
- ECM malfunction
- Corrosion in the sensor connections
- Exposure to extreme temperatures leading to sensor failure
Symptoms of P0185
- Check engine light illuminated on the dashboard
- Reduced fuel efficiency
- Engine misfires
- Rough idling
- Stalling while driving
How to Fix P0185
- Use an OBD-II scanner to retrieve the DTC and confirm the P0185 code.
- Inspect the wiring and connectors in the Fuel Temperature Sensor 'B' circuit for any damage or corrosion.
- Test the Fuel Temperature Sensor 'B' using a multimeter to check for proper resistance values.
- Replace the Fuel Temperature Sensor 'B' if it is found to be faulty.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0185
The typical repair costs for addressing a Fuel Temperature Sensor 'B' circuit malfunction can range from $100 to $300, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to inquire about local rates for a more accurate estimate.
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Code P0185 Information for Specific Makes
- P0185 Mazda — Fuel Temperature Sensor B Circuit Malfunction
- P0185 Mercedes-Benz — Fuel Temperature Sensor 'B' Circuit Malfunction
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