AutoCodes – Cadillac – P1B04 Cadillac

P1B04 Cadillac Code - Drive Motor 2 Position Sensor Circuit Loss of Tracking

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: P1B04 Cadillac indicates Drive Motor 2 Position Sensor Circuit Loss of Tracking.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,181

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1B04 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 P1B04 Cadillac - Drive Motor 2 Position Sensor Circuit Loss of Tracking - AutoCodes.com — P1B04 Cadillac Code - Drive Motor 2 Position Sensor Circuit Loss of Tracking

What does this mean?

What are the Possible Causes of the DTC P1B04 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 P1B04 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 P1B04 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.

Need more information about the P1B04 Cadillac code?

Need more information on how to fix the P1B04 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B04 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1B04 Cadillac Code

1. What are the common symptoms of OBDII code P1B04 in a Cadillac related to Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- Common symptoms include reduced electric vehicle range, poor acceleration, and warning lights on the dashboard related to the hybrid system.

2. What are the potential causes of OBDII code P1B04 in a Cadillac indicating Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- Possible causes can include a faulty drive motor position sensor, damaged wiring or connectors in the sensor circuit, or issues with the hybrid control module.

3. How can I diagnose the Drive Motor 2 Position Sensor Circuit Loss of Tracking issue related to OBDII code P1B04 in my Cadillac?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the drive motor sensor and its circuit for continuity and proper voltage, and inspecting wiring connections for damage.

4. Can I drive my Cadillac with OBDII code P1B04 indicating Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid system components. It is best to address the issue promptly.

5. Are there any temporary solutions or quick fixes for OBDII code P1B04 in a Cadillac related to Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- Temporary fixes are not recommended for this code, as they may not address the underlying issue and could potentially worsen the problem. It's best to have the system properly diagnosed and repaired.

6. How much does it typically cost to repair OBDII code P1B04 in a Cadillac due to Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- Repair costs can vary depending on the exact cause of the issue and labor rates in your area. Costs may involve replacing the drive motor sensor, repairing wiring, or reprogramming the hybrid control module.

7. Is it possible to reset or clear OBDII code P1B04 in a Cadillac related to Drive Motor 2 Position Sensor Circuit Loss of Tracking?

- While you can clear the code with a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from recurring.

8. How long does it typically take to repair the Drive Motor 2 Position Sensor Circuit Loss of Tracking issue triggering OBDII code P1B04 in a Cadillac?

- Repair times can vary depending on the complexity of the issue and availability of parts. In some cases, the repair can be completed in a few hours, while more involved repairs may take longer.

9. Can a DIY enthusiast with automotive experience fix OBDII code P1B04 related to Drive Motor 2 Position Sensor Circuit Loss of Tracking in a Cadillac?

- While some may have the skills to diagnose and repair this issue, it is recommended to consult a professional mechanic or dealer with experience in hybrid vehicle systems to ensure the problem is properly addressed.

10. Will OBDII code P1B04 affecting Drive Motor 2 Position Sensor Circuit Loss of Tracking cause permanent damage to my Cadillac?

- Ignoring this code can lead to further damage to the hybrid system components over time. It is important to address the issue promptly to prevent any potential long-term damage.