P0A90 Chevrolet Code - Drive Motor Performance
Quick Answer
The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. Common causes include Inspect the drive belt for cracks, wear and contamination, Faulty Starter Generator, Starter Generator harness is open or shorted. 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
- P0A90 Chevrolet indicates Drive Motor Performance.
- Common causes
- Common causes include Inspect the drive belt for cracks, wear and contamination, Faulty Starter Generator, Starter Generator harness is open or shorted.
- 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 P0A90 Chevrolet Description
The eAssist hybrid system has a starter generator also called a drive motor. The starter generator is mounted to the front of the engine and is mechanically connected to the crankshaft pulley by a serpentine belt.
The hybrid powertrain control module receives an engine RPM signal over serial data and compares that value to the starter generator rpm received from the drive motor control module. The hybrid powertrain control module uses a ratio of these two speeds to determine if the drive belt is missing or slipping.
What are the Possible Causes of the DTC P0A90 Chevrolet?
- Inspect the drive belt for cracks, wear and contamination
- Faulty Starter Generator
- Starter Generator harness is open or shorted
- Starter Generator circuit poor electrical connection
How to Fix the DTC P0A90 Chevrolet?
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 P0A90 Chevrolet 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 P0A90 Chevrolet Code
1. What are the common symptoms of OBDII code P0A90 Drive Motor Performance in a Chevrolet?
- Common symptoms include a decrease in acceleration, reduced power output, and the vehicle going into a limp mode.
2. What are the possible causes of OBDII code P0A90 in a Chevrolet related to Drive Motor Performance issues?
- Potential causes include a faulty drive motor, issues with the drive motor control module, wiring or connection problems, or software glitches.
3. How can I diagnose the OBDII code P0A90 in my Chevrolet related to Drive Motor Performance problems?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking for other related codes, and conducting thorough inspections of the drive motor components.
4. What are some common DIY repair tips for addressing OBDII code P0A90 Drive Motor Performance in a Chevrolet?
- DIY repair tips may include checking and cleaning electrical connections, inspecting drive motor components for physical damage, and ensuring no loose or damaged wiring.
5. Can driving with an unresolved OBDII code P0A90 related to Drive Motor Performance cause further damage to my Chevrolet?
- Continuing to drive with this code may potentially cause further damage to the drive motor components, leading to more severe issues and costly repairs down the line.
6. Are there any specific maintenance steps I can take to prevent OBDII code P0A90 Drive Motor Performance issues in my Chevrolet?
- Regularly inspecting and servicing the drive motor components, keeping up with recommended maintenance schedules, and addressing any unusual behavior promptly can help prevent this code from appearing.
7. How important is it to address OBDII code P0A90 Drive Motor Performance in a Chevrolet promptly?
- It is crucial to address this code promptly to prevent further damage to the drive motor components and ensure the vehicle's optimal performance and safety.
8. Is it safe to drive my Chevrolet with the OBDII code P0A90 related to Drive Motor Performance if the symptoms are not severe?
- It is not recommended to drive the vehicle if this code is present, as even mild symptoms can indicate underlying issues that may worsen over time.
9. How much does it typically cost to repair OBDII code P0A90 Drive Motor Performance in a Chevrolet at a professional mechanic or dealership?
- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to several thousand dollars, including parts and labor.
10. Can resetting the OBDII system clear the P0A90 code related to Drive Motor Performance in a Chevrolet temporarily?
- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.
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