P1107 — Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage

What Does P1107 Mean?

P1107 is a manufacturer-specific diagnostic trouble code: Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage. This code applies to OTHER, FORD, LINCOLN, MERCURY, VOLKSWAGEN vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1107

⚠️ Check Engine Light (MIL) illuminated
⚠️ Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Reduced engine performance

Common Causes

🔍 Loose or intermittent connection at Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor
🔍 Wire chafing causing intermittent contact
🔍 Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P1107 mean?

P1107 indicates: Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage. The vehicle's computer has detected that the Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1107?

Yes, P1107 is generally safe to drive with in the short term. However, it should still be addressed to pass emissions testing and prevent potential secondary issues.

How much does it cost to fix P1107?

Repair costs for P1107 typically range from $30 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and reseat all Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor connectors
🔧 Repair chafed or damaged wiring in Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor circuit
🔧 Replace Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor if failing intermittently

1
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2
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1107: Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage