P1B03 2018 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 2018 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 2018 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 2018 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 2018 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 2018 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.
Need more information about the P1B03 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P1B03 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1B03 in a 2018 Chevrolet Silverado?
The common symptoms include reduced electric drive motor performance, illuminated check engine light, and potential drivability issues.
2. What does the OBDII code P1B03 indicating Drive Motor Position Sensor Circuit Tracking Lost mean for a 2018 Chevrolet Silverado?
This code indicates a malfunction in the drive motor position sensor circuit, specifically a loss of tracking communication.
3. What are the potential causes of the Drive Motor Position Sensor Circuit Tracking Lost code in a 2018 Chevrolet Silverado?
Possible causes include faulty drive motor position sensor, wiring or connection issues, software glitches, or a malfunction in the electric drive system.
4. How can I diagnose the OBDII code P1B03 in my 2018 Chevrolet Silverado?
Diagnosis typically involves checking the drive motor position sensor for proper operation, inspecting the wiring and connections for any damage, and using diagnostic tools to evaluate the electric drive system.
5. Can I continue driving my 2018 Chevrolet Silverado with the P1B03 code present?
It is not recommended to continue driving the vehicle with this code active, as it can lead to further damage to the electric drive system and potentially affect the vehicle's performance.
6. What are some repair tips for fixing the Drive Motor Position Sensor Circuit Tracking Lost issue in a 2018 Chevrolet Silverado?
Repair tips may include replacing the drive motor position sensor, repairing any damaged wiring or connections, updating software as needed, and ensuring proper reassembly of components.
7. Is it possible to clear the P1B03 code in a 2018 Chevrolet Silverado without fixing the underlying issue?
Clearing the code without addressing the root cause is not recommended, as the issue may persist and trigger the code again, potentially causing more significant problems over time.
8. How much does it typically cost to repair the Drive Motor Position Sensor Circuit Tracking Lost problem in a 2018 Chevrolet Silverado?
The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from a few hundred to a few thousand dollars.
9. Can a DIY enthusiast fix the OBDII code P1B03 in a 2018 Chevrolet Silverado?
While some DIYers may have the skills to address this issue, it is recommended to consult a professional technician or dealership with experience in electric drive systems for accurate diagnosis and repair.
10. How can I prevent the Drive Motor Position Sensor Circuit Tracking Lost code from recurring in my 2018 Chevrolet Silverado?
Regular maintenance, prompt attention to any warning lights or unusual symptoms, and ensuring proper care of the electric drive system can help prevent the recurrence of this code.
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