P077C 2015 Chevrolet Silverado Code - Transmission Output Speed Sensor Circuit Low Voltage
Quick Answer
The P077C diagnostic trouble code (DTC) specifically refers to the Transmission Output Speed Sensor Circuit Low Voltage in a 2015 Chevrolet Silverado. Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors, Corrosion in the sensor circuit. 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
- P077C 2015 Chevrolet Silverado indicates Transmission Output Speed Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors, Corrosion in the sensor circuit.
- 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 P077C 2015 Chevrolet Silverado Description
The P077C diagnostic trouble code (DTC) specifically refers to the Transmission Output Speed Sensor Circuit Low Voltage in a 2015 Chevrolet Silverado. This code indicates that the voltage signal from the transmission output speed sensor is lower than the expected range. The transmission output speed sensor is a vital component that monitors the speed of the output shaft of the transmission. This information is crucial for the vehicle's powertrain control module (PCM) to determine the appropriate shift points and ensure smooth operation of the transmission.
Common Causes of P077C 2015 Chevrolet Silverado
- Faulty transmission output speed sensor
- Damaged wiring or connectors
- Corrosion in the sensor circuit
- PCM malfunction
- Electrical issues within the transmission system
Symptoms of P077C 2015 Chevrolet Silverado
- Harsh or delayed shifting
- Erratic speedometer readings
- Transmission slipping
- Limp mode activation
- Lack of power or acceleration
How to Fix P077C 2015 Chevrolet Silverado
- Perform a thorough inspection of the transmission output speed sensor and its circuit.
- Test the sensor for proper voltage output and resistance.
- Check the wiring and connectors for any damage or corrosion.
- Replace the transmission output speed sensor if it is faulty.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P077C 2015 Chevrolet Silverado
The typical repair costs for addressing a P077C code in a 2015 Chevrolet Silverado may range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that prices can vary significantly based on factors such as location, vehicle make and model, and the extent of the repairs needed. Additionally, diagnosis time and labor rates at auto repair shops can vary, with rates typically ranging between $80 and $150 per hour. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate of the repair costs.
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