P1A85 Saturn Code - Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage
Quick Answer
The Starter/Generator Control Module (SGCM) electronics are immersed in an internal fluid to distribute the heat of the electronics evenly through the SGCM, this electronics internal fluid is not the coolant that is circulated through the SGCM cooling system. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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
- P1A85 Saturn indicates Starter/Generator Control Module Coolant Level Sensor 4 Low Voltage.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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 P1A85 Saturn Description
What are the Possible Causes of the DTC P1A85 Saturn?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module (SGCM) harness is open or shorted
- Starter/Generator Control Module (SGCM) circuit poor electrical connection
How to Fix the DTC P1A85 Saturn?
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 P1A85 Saturn 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 P1A85 Saturn Code
1. What does the OBDII code P1A85 mean on a Saturn vehicle?
P1A85 indicates that the Starter/Generator Control Module has detected a low voltage signal from Coolant Level Sensor 4, which may suggest an issue with the sensor or its circuit.
2. What are the symptoms of the P1A85 code in a Saturn?
Symptoms may include an illuminated check engine light, reduced hybrid system performance, overheating of the starter/generator system, or warnings related to coolant levels.
3. What causes the P1A85 code to appear?
Common causes include a faulty coolant level sensor, damaged wiring or connectors in the sensor circuit, low coolant levels, or a malfunctioning Starter/Generator Control Module.
4. Can low coolant levels trigger the P1A85 code?
Yes, low coolant levels can cause the sensor to send incorrect voltage signals, leading to the P1A85 code.
5. How can I diagnose the P1A85 code on my Saturn?
Start by visually inspecting the coolant level, sensor wiring, and connectors. Use a multimeter to check for proper voltage and continuity in the sensor circuit. A scan tool can also help confirm the fault.
6. Can I drive my Saturn with the P1A85 code active?
Driving with this code is not recommended, as it may lead to overheating of the starter/generator system or reduced vehicle performance.
7. How do I fix the P1A85 code on my Saturn?
Repairs may involve topping off or replacing the coolant, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the coolant level sensor if it is defective.
8. How much does it cost to fix the P1A85 code on a Saturn?
Costs vary depending on the issue but typically range from $50 for minor repairs like wiring fixes to $200-$400 for sensor replacement or module-related repairs.
9. Can a faulty Starter/Generator Control Module cause the P1A85 code?
Yes, although less common, a malfunctioning Starter/Generator Control Module can misinterpret sensor signals and trigger the code.
10. How can I prevent the P1A85 code from coming back?
Regularly check and maintain coolant levels, inspect the sensor and wiring for damage, and address any cooling system issues promptly to prevent future occurrences.
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