P1B03 2017 Chevrolet Silverado Code - Drive Motor Position Sensor Circuit Tracking Lost
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
- P1B03 2017 Chevrolet Silverado indicates Drive Motor Position Sensor Circuit Tracking Lost.
- 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 P1B03 2017 Chevrolet Silverado 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 generator control module tracking error is greater than 5 degrees.
What are the Possible Causes of the DTC P1B03 2017 Chevrolet Silverado?
- 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 P1B03 2017 Chevrolet Silverado?
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 2017 Chevrolet Silverado 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 P1B03 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1B03 in a 2017 Chevrolet Silverado?
- Common symptoms include issues with the drive motor performance, reduced power efficiency, and potential drivability concerns.
2. What does the OBDII code P1B03 indicating "Drive Motor Position Sensor Circuit Tracking Lost" mean in a 2017 Chevrolet Silverado?
- The code indicates a problem with the drive motor position sensor circuit, where the tracking of the sensor signal has been lost.
3. What are some possible causes of the P1B03 code in a 2017 Chevrolet Silverado?
- Causes may include a faulty drive motor position sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's calibration.
4. How serious is the P1B03 code in a 2017 Chevrolet Silverado?
- The code should be addressed promptly to prevent potential damage to the drive motor system and ensure optimal vehicle performance.
5. Can I continue driving my 2017 Chevrolet Silverado with the P1B03 code present?
- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potential safety hazards.
6. How can I diagnose the P1B03 code in my 2017 Chevrolet Silverado?
- Diagnosing the code typically involves using a scan tool to read the code, inspecting the drive motor position sensor and its circuit, and testing for any related issues.
7. What are some repair tips for fixing the P1B03 code in a 2017 Chevrolet Silverado?
- Repair tips may include replacing the drive motor position sensor, repairing or replacing damaged wiring or connectors, and ensuring proper sensor calibration.
8. Can resetting the OBDII system clear the P1B03 code in a 2017 Chevrolet Silverado?
- Resetting the system may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
9. Will the P1B03 code cause my 2017 Chevrolet Silverado to fail an emissions test?
- Yes, the P1B03 code can cause your vehicle to fail an emissions test, as it indicates a problem with the drive motor sensor circuit.
10. Is it possible to prevent the P1B03 code from appearing in my 2017 Chevrolet Silverado?
- Regular maintenance, prompt repairs of any sensor issues, and avoiding rough driving conditions can help prevent the occurrence of the P1B03 code.
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