P1A69 Chevrolet Code - Starter/Generator Control Module Random Access Memory
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 Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator Control Module 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
- P1A69 Chevrolet indicates Starter/Generator Control Module Random Access Memory.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator Control Module 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 P1A69 Chevrolet 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 P1A69 Chevrolet?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
How to Fix the DTC P1A69 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 P1A69 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 P1A69 Chevrolet Code
What does OBDII code P1A69 mean on a Chevrolet?
Code P1A69 indicates an issue with the Starter/Generator Control Module's Random Access Memory (RAM), suggesting a memory error or communication fault within the module.
What are the symptoms of code P1A69 in a Chevrolet?
Common symptoms include a check engine light, reduced fuel efficiency, hybrid system malfunctions (if applicable), or difficulty starting the vehicle.
What causes code P1A69 in a Chevrolet?
The code can be caused by a faulty Starter/Generator Control Module, corrupted RAM, software issues, wiring problems, or a failed attempt to update the module’s firmware.
Can a dead or weak battery cause code P1A69?
Yes, a weak or failing battery can disrupt module communication and lead to memory errors, potentially triggering this code.
How do you fix code P1A69 on a Chevrolet?
Fixes may include reprogramming or replacing the Starter/Generator Control Module, checking and repairing wiring connections, or performing a battery diagnostic and replacement if needed.
Can I drive my Chevrolet with code P1A69?
Driving with this code is not recommended, as it may lead to hybrid system failure or other performance issues. Prompt diagnosis and repair are advised.
How much does it cost to repair code P1A69?
The cost varies, but reprogramming the module may range from $100 to $200, while replacing the module can cost $500 to $1,000, depending on labor and parts.
What tools are needed to diagnose code P1A69?
A professional OBDII scanner with advanced diagnostic capabilities is needed to read the code, check module communication, and assess other related systems.
Does code P1A69 always require module replacement?
No, sometimes the issue can be resolved by reprogramming the module, clearing the memory, or repairing wiring faults without replacing the module.
Can a software update fix code P1A69?
Yes, if the issue is related to outdated or corrupted software, updating the Starter/Generator Control Module firmware may resolve the problem.
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