AutoCodes – Saturn – P1B03 Saturn

P1B03 Saturn Code - Drive Motor 1 Position Sensor Circuit 2 High Voltage

Quick Answer

The drive motor position sensor is monitored by the motor control module. Common causes include Faulty Drive Motor 1 Position Sensor, Drive Motor 1 Position Sensor harness is open or shorted, Drive Motor 1 Position Sensor 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: P1B03 Saturn indicates Drive Motor 1 Position Sensor Circuit 2 High Voltage.
Common causes: Common causes include Faulty Drive Motor 1 Position Sensor, Drive Motor 1 Position Sensor harness is open or shorted, Drive Motor 1 Position Sensor 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 967

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 Aug 07, 2022

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 P1B03 Saturn Description

The drive motor position sensor is monitored by the motor control module. The motor control module monitors the angular position, speed, and direction of the drive motor 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. At vehicle ON, the motor control module outputs a 7 V 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 return signals, often referred to as Sine and Cosine waveforms, abbreviated SIN and COS. 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 coil signals allows the motor control module to determine the exact position, speed, and direction of the drive motor rotor. The drive motor 1 position sensor is serviceable separately from the drive motor assembly. The Diagnostic Trouble Code (DTC) will be set when the motor control module is unable to track the motor position based upon the sensor signals.

OBDII Code P1B03 Saturn - Drive Motor 1 Position Sensor Circuit 2 High Voltage - AutoCodes.com — P1B03 Saturn Code - Drive Motor 1 Position Sensor Circuit 2 High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B03 Saturn?

Faulty Drive Motor 1 Position Sensor
Drive Motor 1 Position Sensor harness is open or shorted
Drive Motor 1 Position Sensor circuit poor electrical connection
Faulty Power Inverter Module

How to Fix the DTC P1B03 Saturn?

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 P1B03 Saturn 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 P1B03 Saturn code?

Need more information on how to fix the P1B03 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B03 Saturn 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 P1B03 Saturn Code

1. What are the common symptoms of OBDII code P1B03 in a Saturn related to Drive Motor 1 Position Sensor Circuit 2 High Voltage?

The common symptoms include the check engine light coming on, reduced engine power, and possibly rough idling or stalling.

2. What are the possible causes of OBDII code P1B03 in a Saturn indicating Drive Motor 1 Position Sensor Circuit 2 High Voltage?

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

3. How can I diagnose the OBDII code P1B03 in my Saturn related to Drive Motor 1 Position Sensor Circuit 2 High Voltage?

Diagnosis typically involves using an OBDII scanner to read the code, checking the wiring and connectors for any visible damage, and testing the position sensor and related components for proper functioning.

4. Can I drive my Saturn with OBDII code P1B03 indicating Drive Motor 1 Position Sensor Circuit 2 High Voltage?

It is not recommended to drive your Saturn with this code present, as it can lead to further damage or safety issues. It's best to address the underlying problem as soon as possible.

5. How can I repair OBDII code P1B03 in my Saturn related to Drive Motor 1 Position Sensor Circuit 2 High Voltage?

Repair options may include replacing the faulty position sensor, repairing or replacing damaged wiring or connectors, addressing any issues with the drive motor, or reprogramming the control module.

6. Are there any DIY tips for troubleshooting OBDII code P1B03 in a Saturn indicating Drive Motor 1 Position Sensor Circuit 2 High Voltage?

While basic troubleshooting like checking for loose connections or damaged wires can be done by DIY enthusiasts, dealing with complex components like the position sensor or control module may require professional assistance.

7. How do I reset the OBDII code P1B03 in my Saturn after repairing the issue with Drive Motor 1 Position Sensor Circuit 2 High Voltage?

After repairing the underlying problem, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the error code.

8. Can a faulty position sensor cause other OBDII codes to trigger in a Saturn?

Yes, a faulty position sensor can cause other related codes to trigger, impacting the overall performance and drivability of the vehicle.

9. Is it safe to continue driving my Saturn if the check engine light is flashing along with OBDII code P1B03 related to Drive Motor 1 Position Sensor Circuit 2 High Voltage?

A flashing check engine light usually indicates a severe issue that requires immediate attention. It is not safe to drive the vehicle in this condition, and you should address the problem promptly.

10. How long does it typically take to repair OBDII code P1B03 in a Saturn related to Drive Motor 1 Position Sensor Circuit 2 High Voltage?

The repair time can vary depending on the specific cause of the code and the availability of parts. It is recommended to consult a professional mechanic for a more accurate estimate based on your Saturn's condition.