P1A65 Code - Starter/Generator Control Module Long Term Memory Performance
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
- P1A65 indicates Starter/Generator Control Module Long Term Memory Performance.
- 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 P1A65 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 P1A65?
- Faulty
- harness is open or shorted
- circuit poor electrical connection
How to Fix the DTC P1A65?
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 P1A65 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
- P1A65 Buick — Starter/Generator Control Module Long Term Memory Performance
- P1A65 Cadillac — Starter/Generator Control Module Long Term Memory Performance
- P1A65 Chevrolet — Starter/Generator Control Module Long Term Memory Performance
- P1A65 GMC — Starter/Generator Control Module Long Term Memory Performance
- P1A65 Saturn — Starter/Generator Control Module Long Term Memory Performance
Frequently Asked Questions about P1A65 Code
What does the OBDII code P1A65 mean?
The P1A65 code indicates an issue with the Starter/Generator Control Module's long-term memory performance, which may affect the hybrid or electrical system's functionality.
What are the common symptoms of the P1A65 code?
Common symptoms include the check engine light turning on, reduced hybrid system performance, or issues with engine starting or charging.
What causes the P1A65 code to appear?
The code can be caused by corrupted data in the Starter/Generator Control Module, a failing control module, voltage irregularities, or a software issue.
How can I diagnose the P1A65 code?
Diagnosis involves using a scan tool to confirm the code, checking for related codes, inspecting the Starter/Generator Control Module, and testing the electrical connections and voltage levels.
Can I still drive my car with the P1A65 code?
While the vehicle may still be drivable, it’s best to address the issue promptly to avoid further damage to the hybrid or electrical system.
How is the P1A65 code typically fixed?
Repairs may include reprogramming or updating the Starter/Generator Control Module, repairing or replacing faulty wiring, or replacing the module if it is defective.
Is the P1A65 code specific to hybrid or electric vehicles?
Yes, this code is typically found in hybrid or electric vehicles, as it relates to the performance of the Starter/Generator Control Module.
What tools are needed to fix the P1A65 code?
A diagnostic scan tool, multimeter, and possibly OEM-specific software for reprogramming are required to properly diagnose and repair the issue.
How much does it cost to fix the P1A65 code?
The cost varies depending on whether a software update, wiring repair, or module replacement is needed, with repairs typically ranging from $200 to $1,000 or more.
Can a low battery cause the P1A65 code?
Yes, a weak or low-voltage battery can trigger this code, as the Starter/Generator Control Module relies on stable voltage for proper operation.
Discuss the causes and fixes for P1A65 OBDII Code
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