Quick Answer
P0875 means: DTC P0875 indicates a high voltage signal from the transmission fluid pressure sensor.
Can I drive with P0875? Immediate attention is recommended to avoid transmission damage.
Common Questions
What does P0875 mean and how does it affect my car?
The P0875 code indicates a fault in the transmission fluid pressure sensor circuit, which can lead to poor transmission performance. If left unaddressed, it may cause slipping, hard shifting, or even complete transmission failure, affecting your vehicle's drivability and safety.
What are the most common causes of P0875 and how much does it cost to fix?
Common causes of P0875 include a faulty transmission fluid pressure sensor, damaged wiring, or low transmission fluid. Repair costs typically range from $150 to $300 for sensor replacement, with wiring repairs costing around $50 to $150, depending on the extent of the damage.
Can I drive my car with P0875 or should I stop immediately?
It’s not advisable to continue driving with a P0875 code, as it may lead to further transmission damage. If you notice symptoms like harsh shifting or slipping, it’s best to have your vehicle inspected immediately to avoid costly repairs down the road.
How can I diagnose P0875 myself using GeekOBD APP?
To diagnose P0875 with GeekOBD APP, start by connecting the app to your vehicle’s OBD2 port. Run a full scan to retrieve codes and freeze frame data. Check for any related codes, and use the live data feature to monitor the transmission fluid pressure sensor's readings for any abnormalities.
What vehicles are most commonly affected by P0875?
The P0875 code is commonly seen in vehicles like the 2007-2014 Chevrolet Silverado and 2011-2015 GMC Sierra. Other vehicles from the GM lineup of this era may also experience this issue due to similar transmission designs.
How can I prevent P0875 from happening again?
To prevent future occurrences of P0875, regularly check and maintain your vehicle's transmission fluid levels and quality. Additionally, schedule routine inspections and service intervals to catch any potential issues early, and keep an eye on the condition of wiring and connectors.
What is P0875?
The diagnostic trouble code (DTC) P0875 refers to a problem with the transmission fluid pressure sensor circuit. This code is logged when the Engine Control Module (ECM) detects a high input voltage from the transmission fluid pressure sensor. The transmission fluid pressure sensor's primary role is to monitor the hydraulic pressure within the transmission system. When the pressure is abnormal, it can lead to poor transmission performance, such as slipping or harsh shifting. This code is often associated with various transmission issues, especially in models like the 2007-2014 Chevrolet Silverado and 2011-2015 GMC Sierra. Ignoring this code can result in extensive damage to the transmission, leading to costly repairs. If you're experiencing issues related to this code, it’s crucial to address them promptly. For instance, you may notice irregular shifting patterns or even a check engine light illuminating on your dashboard. Understanding this code can help you communicate effectively with your mechanic and ensure that necessary repairs are made to keep your vehicle running smoothly.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0875 is present:
- Check engine light illuminates or blinks, indicating transmission issues.
- Transmission may hesitate or jerk during acceleration, making driving uncomfortable.
- Fuel economy might decrease significantly, with some drivers reporting drops of 10-15%.
- Unusual transmission behavior such as slipping or erratic shifting patterns.
- Delayed engagement or harsh shifts when changing gears.
Possible Causes
Most common causes of P0875 (ordered by frequency):
- A faulty transmission fluid pressure sensor is the most common cause, occurring in approximately 60% of cases, often due to wear and tear over time.
- Damaged wiring or connectors in the sensor circuit, which can lead to incorrect voltage readings, causing the code to trigger.
- Insufficient transmission fluid levels, which can lead to abnormal pressure readings; regularly check fluid levels as part of maintenance.
- Less common but serious causes include internal transmission damage, which may require a complete rebuild or replacement.
- Rarely, a malfunctioning ECM can cause misinterpretation of sensor inputs, but this is less frequent compared to sensor-related issues.
P0875 Repair Costs
Cost Breakdown by Repair Type
Transmission Fluid Pressure Sensor Replacement
Replacing the faulty transmission fluid pressure sensor to restore proper function.
- Total: $150 - $300
- Success rate: 95%
Wiring Repair
Repairing damaged wiring or connectors in the sensor circuit.
- Total: $50 - $150
- Success rate: 80%
Money-Saving Tips for P0875
- 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 P0875 Diagnosis Process
Follow these systematic steps to accurately diagnose P0875. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection of the transmission fluid pressure sensor and associated wiring to look for damage or corrosion (5-10 minutes)
Step 1: Conduct an initial visual inspection of the transmission fluid pressure sensor and associated wiring to look for damage or corrosion (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan to retrieve all related codes and freeze frame data for context (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan to retrieve all related codes and freeze frame data for context (10-15 minutes).
Step 3: Step 3: Test the transmission fluid pressure sensor and wiring using a multimeter to check for continuity and proper voltage output (20-30 minutes)
Step 3: Test the transmission fluid pressure sensor and wiring using a multimeter to check for continuity and proper voltage output (20-30 minutes).
Step 4: Step 4: If repairs are made, conduct a system function test to verify that the transmission operates correctly and clear the codes (10-15 minutes)
Step 4: If repairs are made, conduct a system function test to verify that the transmission operates correctly and clear the codes (10-15 minutes).
Step 5: Step 5: Perform a road test to confirm that the transmission is functioning as expected and that the P0875 code does not reappear (15-20 minutes)
Step 5: Perform a road test to confirm that the transmission is functioning as expected and that the P0875 code does not reappear (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 Pressure Sensor Replacement on 2012 Chevrolet Silverado
Vehicle: 2012 Chevrolet Silverado 1500, 85,000 miles
Problem: Customer reported harsh shifting and check engine light on.
Diagnosis: Used GeekOBD APP to retrieve a P0875 code and performed a visual inspection revealing a faulty sensor.
Solution: Replaced the transmission fluid pressure sensor and topped off the transmission fluid.
Cost: $250 (parts: $150, labor: $100)
Result: Post-repair, the transmission functioned normally, and the check engine light was cleared.
Case Study 2: Wiring Repair for P0875 on 2011 GMC Sierra
Vehicle: 2011 GMC Sierra 1500, 90,000 miles
Problem: Customer experienced slipping and delayed shifting.
Diagnosis: Found damaged wiring in the sensor circuit after using the GeekOBD APP for diagnostics.
Solution: Repaired the damaged wiring and ensured all connections were secure.
Cost: $120 (parts: $20, labor: $100)
Result: The transmission behavior improved significantly, and no further codes appeared after testing.