P0878 Code - Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
Quick Answer
The P0878 OBD-II trouble code indicates an issue with the Transmission Fluid Pressure Sensor/Switch 'D' Circuit High. Common causes include Faulty transmission fluid pressure sensor, Clogged transmission filter, Malfunctioning transmission pump. 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
- P0878 indicates Transmission Fluid Pressure Sensor/Switch 'D' Circuit High.
- Common causes
- Common causes include Faulty transmission fluid pressure sensor, Clogged transmission filter, Malfunctioning transmission pump.
- 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 P0878 Description
The P0878 OBD-II trouble code indicates an issue with the Transmission Fluid Pressure Sensor/Switch 'D' Circuit High. This code is typically found in automatic transmission vehicles and is related to the transmission fluid pressure sensor or switch located in the transmission. The sensor is responsible for monitoring the hydraulic pressure inside the transmission and sending this data to the vehicle's computer system. When the sensor detects that the pressure is too high, it triggers the P0878 code.
Common Causes of P0878
- Faulty transmission fluid pressure sensor
- Clogged transmission filter
- Malfunctioning transmission pump
- Low transmission fluid level
- Wiring or connector issues
Symptoms of P0878
- Harsh or delayed shifting
- Transmission slipping
- Increased fuel consumption
- Illuminated Check Engine Light
- Transmission overheating
How to Fix P0878
- Check the transmission fluid level and condition.
- Test the transmission fluid pressure sensor.
- Inspect and replace the transmission filter if necessary.
- Check the transmission pump for proper operation.
- Repair any damaged wiring or connectors related to the sensor.
Cost to Fix P0878
The typical repair costs for addressing the P0878 code can range from $200 to $500, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It is recommended to inquire about local rates to obtain a more accurate estimate for this repair.
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Code P0878 Information for Specific Makes
- P0878 Buick — Transmission Fluid Pressure Switch 4 Circuit High Voltage
- P0878 Cadillac — Transmission Fluid Pressure Switch 4 Circuit High Voltage
- P0878 Chevrolet — Transmission Fluid Pressure Switch 4 Circuit High Voltage
- P0878 Dodge — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 GMC — Transmission Fluid Pressure Switch 4 Circuit High Voltage
- P0878 Toyota — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
Frequently Asked Questions about P0878 Code
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