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P0C57 Cadillac 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 Cadillac 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 1,288

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

What does this mean?

What are the Possible Causes of the DTC P0C57 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac Code

What does the OBDII code P0C57 mean on a Cadillac?

1. The P0C57 code indicates a low voltage issue in the Drive Motor 2 Position Sensor Circuit 1, which monitors the position of the second electric drive motor in hybrid or electric Cadillacs. 2.

What are the common symptoms of the P0C57 code in a Cadillac?

Symptoms may include reduced acceleration, limited power output, the activation of the check engine light, and potential hybrid or electric drive system warnings. 3.

What causes the P0C57 code to appear on a Cadillac?

Common causes include a faulty drive motor position sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning control module, or low voltage supply to the sensor. 4.

Can I drive my Cadillac with the P0C57 code active?

Driving with this code is not recommended, as it may lead to reduced performance or further damage to the hybrid or electric drive system components. 5.

How is the P0C57 code diagnosed on a Cadillac?

A technician will use a scan tool to read the code, inspect the wiring and connectors for damage, test the sensor voltage, and verify proper operation of the drive motor position sensor. 6.

What repairs can fix the P0C57 code in a Cadillac?

Repairs may include replacing the drive motor position sensor, repairing or replacing damaged wiring or connectors, reprogramming the control module, or addressing voltage supply issues. 7.

How much does it cost to fix the P0C57 code on a Cadillac?

The cost varies depending on the issue but can range from $200 to $600 for sensor replacement, plus potential labor costs for wiring repairs or diagnostics. 8.

Can a low battery cause the P0C57 code in a Cadillac?

Yes, a weak or low-voltage battery can contribute to this code by failing to supply adequate voltage to the sensor circuit. 9.

Is the P0C57 code specific to electric or hybrid Cadillacs?

Yes, this code is typically associated with hybrid or electric Cadillacs that utilize a Drive Motor 2 system and related position sensors. 10.

Will clearing the P0C57 code solve the problem in a Cadillac?

Clearing the code may temporarily reset the check engine light, but the underlying issue must be diagnosed and repaired to prevent the code from returning.