Quick Answer
P071C means: P071C indicates a transmission fluid temperature sensor issue.
Can I drive with P071C? Immediate attention is recommended to prevent further transmission damage.
Common Questions
What does P071C mean and how does it affect my car?
The P071C code indicates an issue with the transmission fluid temperature sensor. If this sensor is not working properly, it can lead to overheating and inefficient transmission operation, potentially causing serious damage if not addressed promptly.
What are the most common causes of P071C and how much does it cost to fix?
Common causes of the P071C code include a faulty temperature sensor, wiring issues, or low transmission fluid levels. Repair costs typically range from $80 to $300, depending on the specific issue and required repairs.
Can I drive my car with P071C or should I stop immediately?
While you may be able to drive for a short distance, it's advisable to stop driving if you see the P071C code. Continuing to drive can lead to further transmission damage and potentially costly repairs.
How can I diagnose P071C myself using GeekOBD APP?
Using the GeekOBD APP, start by scanning for codes. Once you retrieve the P071C code, check the freeze frame data for additional context. You can also monitor the sensor's readings live to see if they are consistent with expected values.
What vehicles are most commonly affected by P071C?
Vehicles such as the 2015-2018 Ford F-150, 2016-2019 Chevrolet Silverado, and various models from Chrysler and Dodge frequently experience the P071C code, often due to the same sensor-related issues.
How can I prevent P071C from happening again?
Regular maintenance, including transmission fluid changes and inspections of the wiring and connectors, can help prevent P071C. Using high-quality transmission fluid and addressing any warning signs promptly will also help maintain your vehicle's performance.
What is P071C?
The diagnostic trouble code P071C indicates a problem related to the transmission fluid temperature sensor's performance or range. This code is commonly found in various Ford and General Motors (GM) vehicles, including the 2015-2018 Ford F-150 and the 2016-2019 Chevrolet Silverado. When this code is triggered, it suggests that the transmission control module (TCM) has detected a discrepancy between the expected temperature and the actual temperature readings from the sensor. In simpler terms, it means that the vehicle's transmission fluid temperature isn't where it should be, potentially leading to overheating or inefficient transmission performance. Ignoring this issue can result in further damage to the transmission, ultimately leading to costly repairs. Drivers may notice symptoms such as erratic shifting, decreased fuel efficiency, or even transmission overheating, which can significantly impact vehicle performance and safety. It's crucial to address this code promptly to avoid severe transmission issues down the line.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P071C is present:
- Check engine light stays on constantly, indicating a persistent issue with the transmission fluid temperature.
- Engine hesitates or shifts roughly during acceleration, leading to a jerky driving experience.
- Fuel economy decreased by 10-15%, as the transmission struggles to operate efficiently due to incorrect temperature readings.
- Transmission overheating warning may appear on the dashboard, indicating severe performance issues.
- Unusual noises from the transmission, such as grinding or whining, may occur if the issue persists.
Possible Causes
Most common causes of P071C (ordered by frequency):
- Faulty transmission fluid temperature sensor (60% likelihood) - The sensor may be malfunctioning, causing incorrect temperature readings.
- Wiring issues or connector problems (20% likelihood) - Damaged wiring or loose connections can disrupt signal transmission between the sensor and the TCM.
- Low transmission fluid levels (10% likelihood) - Insufficient fluid can lead to overheating, affecting the sensor's readings.
- Bad transmission control module (5% likelihood) - A malfunctioning TCM may misinterpret the temperature data from the sensor.
- Rarely, internal transmission issues (5% likelihood) - Mechanical problems within the transmission can also lead to erroneous temperature readings.
P071C Repair Costs
Cost Breakdown by Repair Type
Sensor Replacement
Replacing the faulty transmission fluid temperature sensor is a common and effective repair.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Fixing damaged wiring or connectors can resolve the issue if the sensor itself is functioning properly.
- Total: $100 - $200
- Success rate: 75%
Transmission Fluid Change
If fluid levels are low or contaminated, replacing the transmission fluid can help.
- Total: $80 - $150
- Success rate: 70%
Money-Saving Tips for P071C
- 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 P071C Diagnosis Process
Follow these systematic steps to accurately diagnose P071C. 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 (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter to test the transmission fluid temperature sensor and verify its output (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the transmission fluid temperature sensor and verify its output (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation of the transmission system after repairs and clear codes (10-15 minutes)
Step 4: System function test - Verify proper operation of the transmission system after repairs and clear codes (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes return (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes return (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: Transmission Fluid Sensor Replacement in 2017 Ford F-150
Vehicle: 2017 Ford F-150, 45,000 miles
Problem: Customer reported check engine light and erratic shifting.
Diagnosis: OBD2 scan revealed code P071C. Visual inspection showed a damaged temperature sensor.
Solution: Replaced the faulty transmission fluid temperature sensor.
Cost: $220
Result: After replacement, the check engine light cleared, and the transmission operated smoothly.
Case Study 2: Wiring Repair in 2016 Chevrolet Silverado
Vehicle: 2016 Chevrolet Silverado, 60,000 miles
Problem: Customer experienced poor acceleration and check engine light.
Diagnosis: P071C code was retrieved. Wiring to the sensor was found to be frayed.
Solution: Repaired the damaged wiring and secured all connections.
Cost: $150
Result: Vehicle performance improved, and the check engine light remained off after the fix.