P1108 Code - Dual Alternator Battery Lamp Circuit Malfunction
Quick Answer
The Barometric Pressure (BARO) sensor is built into the Engine Control Module (ECM) and monitors atmospheric pressure. Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module (ECM). 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
- P1108 indicates Dual Alternator Battery Lamp Circuit Malfunction.
- Common causes
- Common causes include Engine Control Module (ECM) outdated or incorrect software, Faulty Engine Control Module (ECM).
- 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 P1108 Description
What are the Possible Causes of the DTC P1108?
- Engine Control Module (ECM) outdated or incorrect software
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1108?
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 P1108 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.
Need more information about the P1108 code?
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Information for Specific Makes
- P1108 Acura — Barometric Pressure Sensor Circuit High Voltage
- P1108 Buick — BARO To MAP Sensor Circuit Comparison Too High
- P1108 Cadillac — BARO To MAP Sensor Circuit Comparison Too High
- P1108 Chevrolet — BARO to MAP Sensor Comparison Too High
- P1108 Ford — Dual Alternator Battery Lamp Circuit Malfunction
- P1108 GMC — BARO to MAP Sensor Comparison Too High
- P1108 Honda — Barometric Pressure Sensor Circuit High Voltage
- P1108 Hyundai — Manifold Absolute Pressure Sensor Short Circuit
- P1108 Isuzu — Barometric Pressure Circuit Input High
- P1108 Jaguar — MAP Sensor Circuit Comparison Too High Voltage
- P1108 Subaru — Induction Control Solenoid Valve Circuit Malfunction
- P1108 Suzuki — Manifold Differential Pressure Sensor High Input
Frequently Asked Questions about P1108 Code
1. What does the OBDII code P1108 indicate?
P1108 indicates a malfunction in the dual alternator battery lamp circuit, which can affect the vehicle’s charging system monitoring.
2. What are the common symptoms of code P1108?
Common symptoms include the battery warning light staying on, electrical system issues, and potential battery drainage.
3. What causes the P1108 code to appear?
Causes may include faulty alternators, damaged wiring in the battery lamp circuit, or issues with the battery lamp itself.
4. How can I diagnose the P1108 code?
Check the alternator functionality, inspect the wiring and connectors for damage, and test the battery lamp circuit for continuity.
5. Can code P1108 lead to serious issues if ignored?
Yes, ignoring this code can lead to battery failure, electrical system malfunctions, and potential vehicle breakdowns.
6. How can I fix the P1108 code?
Repair or replace faulty alternators, fix damaged wiring in the circuit, and ensure the battery lamp is functioning properly.
7. Is P1108 specific to vehicles with dual alternators?
Yes, this code is specific to vehicles equipped with dual alternator systems.
8. What tools do I need to repair the P1108 code?
You may need a multimeter, wiring diagrams, an OBDII scanner, and basic automotive tools for testing and repairs.
9. Can a dead battery cause the P1108 code?
A dead battery itself is unlikely to cause this code, but battery-related issues such as poor connections could contribute to the malfunction.
10. Should I replace the alternators if I get a P1108 code?
Not necessarily; test the alternators first to confirm they are faulty before replacing them.
Discuss the causes and fixes for P1108 OBDII Code
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