P077D 2016 Chevrolet Silverado Code - Transmission Output Speed Sensor Circuit High Voltage
Quick Answer
The Output Speed Sensor (OSS) is a hall-effect type sensor. Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor circuit poor electrical connection. 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
- P077D 2016 Chevrolet Silverado indicates Transmission Output Speed Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor circuit poor electrical connection.
- 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.
Code P077D 2016 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the vehicle speed sensor signal circuit voltage is 4.75 V or greater for 0.8 s.
What are the Possible Causes of the DTC P077D 2016 Chevrolet Silverado?
- Faulty Transmission Output Speed Sensor (OSS)
- Transmission Output Speed Sensor harness is open or shorted
- Transmission Output Speed Sensor circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P077D 2016 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P077D 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P077D 2016 Chevrolet Silverado code?
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Frequently Asked Questions about P077D 2016 Chevrolet Silverado Code
What does the OBDII code P077D mean on a 2016 Chevrolet Silverado?
The P077D code indicates a high voltage issue in the transmission output speed sensor circuit, which monitors the speed of the transmission output shaft.
What are the symptoms of code P077D in a 2016 Chevrolet Silverado?
Common symptoms include erratic shifting, transmission slipping, reduced fuel efficiency, or activation of the check engine light.
What causes the P077D code to appear?
Potential causes include a faulty output speed sensor, damaged wiring or connectors, a short circuit, or issues with the transmission control module (TCM).
Can I drive my 2016 Chevrolet Silverado with the P077D code?
Driving with this code is not recommended as it can lead to further transmission issues or unsafe driving conditions due to erratic shifting.
How do I fix the P077D code on my 2016 Chevrolet Silverado?
Repairs may involve replacing the faulty output speed sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the TCM if necessary.
Where is the transmission output speed sensor located on a 2016 Chevrolet Silverado?
The transmission output speed sensor is typically located near the rear of the transmission housing, monitoring the speed of the output shaft.
How much does it cost to fix the P077D code on a 2016 Chevrolet Silverado?
Repair costs can vary, but replacing the output speed sensor typically costs between $150 and $300, depending on parts and labor.
Can a bad output speed sensor cause other problems?
Yes, a faulty sensor can lead to poor transmission performance, reduced fuel efficiency, and potential damage to other transmission components if not addressed.
How can I diagnose the P077D code on my 2016 Chevrolet Silverado?
A professional scan tool can confirm the code, and further diagnosis may involve inspecting the output speed sensor, wiring, and TCM for issues.
Does the P077D code always mean the output speed sensor is bad?
No, the issue could also be caused by damaged wiring, a poor connection, or a fault in the TCM rather than the sensor itself.
Discuss the causes and fixes for P077D 2016 Chevrolet Silverado OBDII Code
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