AutoCodes – Chevrolet – P0C57 Chevrolet

P0C57 Chevrolet Code - Drive Motor 2 Position Sensor Circuit 1 Low Voltage

Quick Answer

The drive motor generator position sensor is monitored by the motor control module. Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor 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: P0C57 Chevrolet indicates Drive Motor 2 Position Sensor Circuit 1 Low Voltage.
Common causes: Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor 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.

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Code Popularity 1,320

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0C57 Chevrolet Description

The drive motor generator position sensor is monitored by the motor control module. The motor control module monitors the angular position, speed and direction of the drive motor generator rotor based upon the signals of the resolver-type 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 drive motor generator. At vehicle ON, the motor control module outputs a 7 volt ac, 10 kHz excitation signal to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular shaped rotor. The motor 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 motor control module to determine the exact position, speed and direction of the drive motor generator rotor. The position sensor is a non-serviceable part of the drive motor generator.

OBDII Code P0C57 Chevrolet - Drive Motor 2 Position Sensor Circuit 1 Low Voltage - AutoCodes.com — P0C57 Chevrolet Code - Drive Motor 2 Position Sensor Circuit 1 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0C57 Chevrolet?

Faulty Drive Motor Generator
Drive Motor Generator harness is open or shorted
Drive Motor Generator circuit poor electrical connection

How to Fix the DTC P0C57 Chevrolet?

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 P0C57 Chevrolet 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0C57 Chevrolet Code

1. What does the OBDII code P0C57 mean for a Chevrolet vehicle?

P0C57 indicates that the Drive Motor 2 Position Sensor Circuit 1 is experiencing low voltage, which could affect the operation of the vehicle's hybrid or electric drive system.

2. What are the common symptoms of code P0C57 in a Chevrolet?

Symptoms may include reduced engine performance, an illuminated check engine light, erratic shifting (if equipped with a hybrid transmission), and potential loss of power in the drive motor.

3. What causes the P0C57 code to appear in a Chevrolet?

Common causes include a faulty Drive Motor 2 position sensor, damaged or corroded wiring or connectors in the sensor circuit, or issues with the hybrid/EV control module.

4. Can I drive my Chevrolet with a P0C57 code?

It is not recommended to drive with this code active, as it may lead to reduced performance or further damage to the hybrid or electric drive system.

5. How is the P0C57 code diagnosed in a Chevrolet?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, test the position sensor, and potentially check for updates or faults in the control module.

6. How do you fix the P0C57 code on a Chevrolet?

Repairs may include replacing the Drive Motor 2 position sensor, repairing or replacing damaged wiring or connectors, or reprogramming/updating the control module if necessary.

7. Is the P0C57 code specific to hybrid or electric Chevrolet vehicles?

Yes, the P0C57 code is typically associated with hybrid or electric Chevrolet vehicles that use drive motors as part of their propulsion system.

8. What tools are needed to repair a P0C57 error code?

Essential tools include an OBDII scan tool, a multimeter for voltage testing, and potentially wiring repair tools to address circuit issues.

9. How much does it cost to repair the P0C57 code on a Chevrolet?

Repair costs can vary, but replacing the Drive Motor 2 position sensor may cost between $150 and $400, while wiring repairs or module reprogramming could add to the expense.

10. Can a software update fix the P0C57 code in a Chevrolet?

In some cases, a software update for the hybrid/EV control module may resolve the issue, especially if it is caused by a known software bug.