P0C53 2018 GMC Sierra Code - Drive Motor Position Sensor Circuit 1 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
- P0C53 2018 GMC Sierra indicates Drive Motor Position Sensor Circuit 1 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 P0C53 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 1 reference voltage is greater than 4.9 V.
What are the Possible Causes of the DTC P0C53 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 P0C53 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 P0C53 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 P0C53 2018 GMC Sierra Code
1. What does the OBDII code P0C53 mean on a 2018 GMC Sierra?
P0C53 indicates an issue with the Drive Motor Position Sensor Circuit 1, specifically detecting a high voltage condition.
2. What are common symptoms of the P0C53 code on a 2018 GMC Sierra?
Common symptoms include reduced engine performance, warning lights on the dashboard, and potential loss of hybrid or electric drive functionality.
3. What causes the P0C53 code to appear?
The code is typically triggered by a faulty drive motor position sensor, damaged wiring or connectors, or an issue with the sensor's circuit.
4. Is it safe to drive a 2018 GMC Sierra with the P0C53 code?
Driving with this code may not be safe, as it can lead to reduced performance or compromised electric drive systems. It’s recommended to address the issue promptly.
5. How do you diagnose the P0C53 code on a GMC Sierra?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the drive motor position sensor, and checking the wiring and connections for damage or corrosion.
6. Can a faulty drive motor position sensor cause the P0C53 code?
Yes, a malfunctioning drive motor position sensor is one of the most common causes of this code.
7. How do you fix the P0C53 code on a 2018 GMC Sierra?
Repairs may involve replacing the drive motor position sensor, repairing or replacing damaged wiring, or updating the vehicle’s software if needed.
8. What tools are needed to troubleshoot the P0C53 code?
You’ll need an OBDII scanner, a multimeter to test voltage and continuity, and possibly wiring diagrams for the drive motor position sensor circuit.
9. Can clearing the P0C53 code resolve the issue?
Clearing the code may temporarily turn off the warning light, but if the underlying issue isn’t fixed, the code will likely return.
10. How much does it cost to repair the P0C53 code on a 2018 GMC Sierra?
Repair costs vary depending on the cause, but replacing the drive motor position sensor can cost between $200 and $500, including parts and labor. Wiring repairs may cost less.
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