Engine-CodesFord – P1108 Ford

P1108 Ford Code - Dual Alternator Battery Lamp Circuit Malfunction

Quick Answer

The P1108 Ford code indicates a Dual Alternator Battery Lamp Circuit Malfunction. Common causes include Faulty wiring connections, Defective alternator components, Malfunctioning battery lamp circuit. 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 Ford indicates Dual Alternator Battery Lamp Circuit Malfunction.
Common causes
Common causes include Faulty wiring connections, Defective alternator components, Malfunctioning battery lamp circuit.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1108 Ford Description

The P1108 Ford code indicates a Dual Alternator Battery Lamp Circuit Malfunction. This code typically points to an issue with the circuit that controls the battery lamp on a vehicle with a dual alternator system. In vehicles equipped with dual alternators, the battery lamp serves as an indicator of the charging status of the batteries. When this circuit malfunctions, it can lead to inaccurate readings or a complete failure of the battery lamp to illuminate.

OBDII Code P1108 Ford - Dual Alternator Battery Lamp Circuit Malfunction
P1108 Ford Code - Dual Alternator Battery Lamp Circuit Malfunction

Common Causes of P1108 Ford

  1. Faulty wiring connections
  2. Defective alternator components
  3. Malfunctioning battery lamp circuit
  4. Corrosion in the electrical system
  5. Poor electrical connections

Symptoms of P1108 Ford

  1. Battery lamp not illuminating
  2. Inaccurate battery voltage readings
  3. Battery overcharging or undercharging
  4. Electrical system malfunctions
  5. Reduced battery life

How to Fix P1108 Ford

  1. Perform a comprehensive diagnostic check of the battery lamp circuit and alternator system.
  2. Inspect and repair any damaged wiring connections.
  3. Test the alternator components for proper functioning and replace any defective parts.
  4. Check and repair any corrosion in the electrical system.
  5. Reset the battery lamp circuit and ensure proper operation.

Cost to Fix P1108 Ford

The cost of repairing a Dual Alternator Battery Lamp Circuit Malfunction can vary depending on the extent of the issue and the specific repairs needed. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain a detailed estimate from a trusted mechanic. Rates typically range from $80 to $150 per hour, with variations based on location, vehicle make and model, and engine type.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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