P0C5D 2017 GMC Sierra Code - Drive Motor Position Sensor Circuit 2 High Voltage
Quick Answer
The generator control module also called the starter/generator control module, is comprised of the following three control modules: the hybrid/EV powertrain control module 1, 14 V power module, and the drive motor control module. Common causes include Faulty Starter/Generator, Starter/Generator harness is open or shorted, Starter/Generator 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
- P0C5D 2017 GMC Sierra indicates Drive Motor Position Sensor Circuit 2 High Voltage.
- Common causes
- Common causes include Faulty Starter/Generator, Starter/Generator harness is open or shorted, Starter/Generator 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 P0C5D 2017 GMC Sierra Description
The generator control module monitors the angular position, speed, and direction of the starter generator rotor based upon the signals of the resolver-type motor position sensor. The position sensor contains a drive coil, two driven coils, and an irregular-shaped metallic rotor. The metallic rotor is mechanically attached to the shaft of the starter generator.
At ignition ON, an AC voltage, 10 kHz excitation signal is output to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular-shaped rotor. The generator control module then monitors the two driven coil circuits for a return signal. The position of the irregular metallic rotor causes the magnetically induced return signals of the driven coils to vary in size and shape. A comparison of the two driven coils signals allows the generator control module to determine the exact position, speed, and direction of the starter generator rotor. The position sensor is a non-serviceable part of the starter generator.
The Diagnostic Trouble Code (DTC) will be set when the Drive Motor Position Sensor Circuit 2 reference voltage is greater than 4.9 V.
What are the Possible Causes of the DTC P0C5D 2017 GMC Sierra?
- Faulty Starter/Generator
- Starter/Generator harness is open or shorted
- Starter/Generator circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC P0C5D 2017 GMC Sierra?
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 P0C5D 2017 GMC Sierra 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.
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Frequently Asked Questions about P0C5D 2017 GMC Sierra Code
1. What does the OBDII code P0C5D mean on a 2017 GMC Sierra?
P0C5D indicates a "Drive Motor Position Sensor Circuit 2 High Voltage" issue, meaning the control module detected a high voltage signal from the second drive motor position sensor.
2. What are the symptoms of the P0C5D code on a 2017 GMC Sierra?
Common symptoms include reduced vehicle performance, an illuminated check engine light, limited hybrid/electric mode functionality (if applicable), or abnormal transmission behavior.
3. What causes the P0C5D code to appear on a 2017 GMC Sierra?
Causes can include a faulty drive motor position sensor, damaged wiring or connectors in the sensor circuit, a short circuit, or a malfunctioning powertrain control module (PCM).
4. Can I drive my 2017 GMC Sierra with the P0C5D code?
Driving may be possible, but not recommended. Reduced performance and potential drivetrain damage could occur if the issue isn’t addressed promptly.
5. How do I diagnose the P0C5D code on my 2017 GMC Sierra?
Diagnosis involves scanning for additional codes, visually inspecting the wiring and connectors for damage, testing the drive motor position sensor, and checking the circuit for proper voltage and continuity.
6. How do I fix the P0C5D code on a 2017 GMC Sierra?
Repairs may include replacing the drive motor position sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or updating/reprogramming the PCM if necessary.
7. What tools are needed to troubleshoot the P0C5D code?
A professional-grade OBDII scanner, a multimeter, and wiring diagrams for the 2017 GMC Sierra are essential for accurate diagnosis and repair.
8. How much does it cost to repair the P0C5D code on a 2017 GMC Sierra?
Costs vary depending on the root cause. Replacing a sensor typically costs $200-$400, while wiring repairs may be less. PCM replacement or reprogramming could be more expensive.
9. Can a P0C5D code be caused by a dead battery or low voltage?
It’s unlikely, but low system voltage could indirectly contribute to the issue by affecting sensor performance. Always check battery health as part of the diagnostic process.
10. Is the P0C5D code specific to GMC Sierra vehicles?
No, the P0C5D code can appear in other vehicles with similar hybrid or electric drive systems, but the exact symptoms and repair steps may vary based on the manufacturer.
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