P1A64 Code - Starter/Generator Control Module Reset
Quick Answer
The purpose of the Accessory Power Module (APM), integral to the Starter/Generator Control Module (SGCM), is to control the amount and direction of energy flowing between the 42 V DC and 14 V DC buses via the APM, bi-directional 42 V DC to 14 V DC converter. Common causes include Faulty, harness is open or shorted, 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
- P1A64 indicates Starter/Generator Control Module Reset.
- Common causes
- Common causes include Faulty, harness is open or shorted, 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 P1A64 Description
When the APM Power Conversion direction is set to a value of 42 V to 14 V, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM. When the Service Charge or jump starting is requested, the energy will flow from the 14 V DC Bus to the 42 V DC Bus via the APM. When the APM Power Conversion direction is set to a value of Off, the APM will be turned off, and not consume or transfer any power. When the APM Power Conversion direction is set to a value of Invalid, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM.
What are the Possible Causes of the DTC P1A64?
- Faulty
- harness is open or shorted
- circuit poor electrical connection
How to Fix the DTC P1A64?
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 P1A64 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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Information for Specific Makes
- P1A64 Buick — Starter/Generator Control Module Reset
- P1A64 Cadillac — Starter/Generator Control Module Reset
- P1A64 Chevrolet — Starter/Generator Control Module Reset
- P1A64 GMC — Starter/Generator Control Module Reset
- P1A64 Saturn — Starter/Generator Control Module Reset
Frequently Asked Questions about P1A64 Code
1. What does OBDII code P1A64 mean?
- OBDII code P1A64 refers to an issue with the Starter/Generator Control Module Reset.
2. What are the common symptoms of OBDII code P1A64?
- Common symptoms of P1A64 may include starting issues, poor engine performance, and warning lights on the dashboard.
3. What are the possible causes of OBDII code P1A64?
- The code P1A64 can be triggered by issues such as a faulty starter/generator control module, wiring problems, or a weak battery.
4. How can I diagnose OBDII code P1A64?
- Diagnosing P1A64 typically involves using an OBDII scanner to retrieve the code, checking the starter/generator control module, testing the battery, and inspecting related wiring.
5. How can I reset the Starter/Generator Control Module to clear the P1A64 code?
- In some cases, resetting the Starter/Generator Control Module can be done by disconnecting the battery for a few minutes and then reconnecting it.
6. Can I drive my vehicle with OBDII code P1A64?
- It is not recommended to drive your vehicle with an active P1A64 code, as it may lead to further damage and safety issues.
7. Will the P1A64 code reset itself after repair?
- After repairing the underlying issue causing the P1A64 code, you may need to clear the code with an OBDII scanner to reset the system.
8. How much does it cost to repair OBDII code P1A64?
- The cost of repairing P1A64 can vary depending on the exact cause of the issue, but it may involve replacing the starter/generator control module, fixing wiring problems, or addressing battery issues.
9. Can I repair OBDII code P1A64 myself?
- If you have experience working on automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair P1A64 yourself. Otherwise, it is recommended to seek professional help.
10. How can I prevent OBDII code P1A64 from coming back?
- To prevent the recurrence of P1A64, it is important to maintain your vehicle's electrical system regularly, including checking the battery health, ensuring proper wiring connections, and addressing any warning signs promptly.
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