Quick Answer
P0187 means: P0187 indicates a fuel temperature sensor issue, affecting engine performance.
Can I drive with P0187? It is advisable to address this code soon to prevent further engine damage.
Common Questions
What does P0187 mean and how does it affect my car?
P0187 means there is a problem with your fuel temperature sensor, which can lead to poor engine performance and efficiency. If ignored, it could cause more serious issues like engine overheating or stalling.
What are the most common causes of P0187 and how much does it cost to fix?
Common causes include a faulty sensor, poor electrical connections, or fuel contamination. Repair costs can range from $150 to $300 depending on the specific issue.
Can I drive my car with P0187 or should I stop immediately?
While you can drive with this code, it is recommended to address it soon to prevent potential engine damage and performance issues.
How can I diagnose P0187 myself using GeekOBD APP?
Use the GeekOBD APP to scan your vehicle for codes, check freeze frame data for context, and test the fuel temperature sensor's output against manufacturer specifications.
What vehicles are most commonly affected by P0187?
Commonly affected vehicles include the 2010-2016 Ford F-150 and 2011-2015 Chevrolet Silverado. Always check for recalls or Technical Service Bulletins (TSBs) regarding this issue.
How can I prevent P0187 from happening again?
Regularly maintain your fuel system, ensure quality fuel is used, and inspect electrical connections to prevent moisture buildup.
What is P0187?
DTC P0187 indicates that the Engine Control Module (ECM) has detected an abnormal reading from the fuel temperature sensor. This sensor is crucial as it measures the temperature of the fuel in the system, which helps the ECM determine the correct fuel mixture and optimize performance. When the sensor fails or the readings are out of acceptable ranges, it can lead to poor engine performance, decreased fuel efficiency, and increased emissions. Real-world implications include engine hesitation, rough idling, and in some cases, the vehicle may enter limp mode to protect the engine from potential damage. This code can arise from issues like a faulty sensor, poor electrical connections, or even fuel contamination. Car owners should pay attention to the symptoms and seek diagnostic assistance promptly to avoid further complications. Ignoring this code could lead to more extensive repairs and higher costs down the line.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0187 is present:
- Check engine light illuminates and stays on, indicating an issue that requires immediate attention.
- Engine hesitates during acceleration, which can be felt especially when trying to merge onto highways or overtake.
- Fuel economy decreased by 10-15%, leading to frequent trips to the gas station and increased overall fuel costs.
- Rough idling can occur, leading to vibrations felt inside the cabin when the vehicle is stationary.
- Poor engine performance, particularly when the engine is cold, can cause starting issues as well.
Possible Causes
Most common causes of P0187 (ordered by frequency):
- The most common cause is a faulty fuel temperature sensor, with a likelihood of approximately 60%. This can occur due to wear and tear or exposure to extreme conditions.
- A second common cause is poor electrical connections or damaged wiring, leading to intermittent sensor readings. This could be exacerbated by corrosion or vibrations.
- Another cause could be fuel contamination or excessive moisture in the fuel, which can affect the sensor's ability to measure temperature accurately. Regular fuel quality checks can help prevent this.
- Less common but serious is a failure of the ECM itself, though this is rare and usually accompanies other codes.
- A rare cause might be the installation of aftermarket fuel components that aren’t compatible with the OEM specifications, leading to incorrect readings.
P0187 Repair Costs
Cost Breakdown by Repair Type
Fuel Temperature Sensor Replacement
Replacing the faulty fuel temperature sensor with an OEM part.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring or connectors leading to the fuel temperature sensor.
- Total: $50 - $150
- Success rate: 90%
Money-Saving Tips for P0187
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional P0187 Diagnosis Process
Follow these systematic steps to accurately diagnose P0187. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, which can provide insights into the engine's performance at the time of the error (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, which can provide insights into the engine's performance at the time of the error (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter to test the fuel temperature sensor’s resistance and voltage output to ensure it meets specifications (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the fuel temperature sensor’s resistance and voltage output to ensure it meets specifications (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any return of symptoms (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any return of symptoms (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: Fuel Temperature Sensor Replacement in a 2015 Ford F-150
Vehicle: 2015 Ford F-150, 75,000 miles
Problem: Customer reported check engine light and decreased fuel efficiency.
Diagnosis: OBD2 scan revealed P0187. Visual inspection showed corrosion on the sensor wiring.
Solution: Replaced the fuel temperature sensor and repaired the wiring. Cleared codes and performed a function test.
Cost: $250 (sensor $200, wiring repair $50)
Result: Customer reported improved fuel efficiency and no return of check engine light.
Case Study 2: Wiring Repair in a 2012 Chevrolet Silverado
Vehicle: 2012 Chevrolet Silverado, 95,000 miles
Problem: Customer noticed engine hesitation and check engine light on.
Diagnosis: P0187 was confirmed via scan. Wiring to the fuel temperature sensor was frayed.
Solution: Repaired the damaged wiring and replaced the sensor.
Cost: $180 (wiring repair $50, sensor replacement $130)
Result: Engine performance improved significantly with no further issues.