P0C5D 2018 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 2018 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 2018 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 2018 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 2018 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 2018 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 2018 GMC Sierra Code
What does the OBDII code P0C5D mean on a 2018 GMC Sierra?
The P0C5D code indicates a high voltage issue in the Drive Motor Position Sensor Circuit 2, which monitors the position of the drive motor in the vehicle's hybrid or electric system.
What are common symptoms of the P0C5D code?
Symptoms may include reduced vehicle performance, the Check Engine Light turning on, and in some cases, limited or no electric drive functionality.
What causes the P0C5D code to appear?
Possible causes include a faulty drive motor position sensor, damaged wiring or connectors in Circuit 2, or an issue with the hybrid drive system control module.
Can I continue driving with the P0C5D code active?
It’s not recommended to drive with this code active, as it may lead to further damage to the hybrid system or reduced vehicle performance.
How is the P0C5D code diagnosed?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the drive motor position sensor for proper operation.
How do I fix the P0C5D code?
Repairs may involve replacing the drive motor position sensor, repairing damaged wiring or connectors, or reprogramming the hybrid drive system control module.
Is the P0C5D code specific to hybrid or electric vehicles?
Yes, this code is specific to vehicles with hybrid or electric drive systems, as it relates to the drive motor position sensor.
How much does it cost to repair the P0C5D code on a 2018 GMC Sierra?
Repair costs can vary but typically range from $200 to $800, depending on whether the sensor, wiring, or control module needs replacement.
Can a dead battery cause the P0C5D code to appear?
While unlikely, a weak or malfunctioning hybrid battery can potentially contribute to electrical system issues, which might indirectly affect drive motor position sensor circuits.
How can I prevent the P0C5D code from reoccurring?
Regular maintenance of the hybrid system, inspecting wiring and connectors for wear, and ensuring proper operation of all sensors can help prevent this code from reappearing.
Discuss the causes and fixes for P0C5D 2018 GMC Sierra OBDII Code
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