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Home/DTC Codes/Lincoln/LS/2000-2006 3.9L V8/P1103
P1103

MAF Sensor In Range But Higher Than Expected

2000-2006 Lincoln LS 3.9L V8

Moderate SeverityPowertrain

Description

The MAF sensor signal is within the valid voltage range but consistently higher than expected by the PCM. This suggests the sensor is over-reporting airflow.

Symptoms

  • Check Engine Light
  • Rich running condition
  • Black exhaust smoke
  • Poor fuel economy
  • Rough idle

Common Causes

  • Contaminated MAF sensor
  • Faulty MAF sensor
  • Air filter housing not sealed properly
  • PCM calibration issue

Diagnostic Steps

  1. Clean MAF sensor
  2. Verify air filter housing is sealed
  3. Check for TSBs related to PCM calibration
  4. Compare readings to specifications

Repair Notes

Clean or replace MAF sensor. Ensure intake system is properly sealed.

Related Codes

P1100MAF Sensor IntermittentP1100MAF Sensor IntermittentP1100MAF Sensor IntermittentP1100BARO Sensor CircuitP1100MAP Sensor Circuit MalfunctionP1100MAP Sensor Circuit MalfunctionP1100MAP Sensor Circuit MalfunctionP1100BARO Sensor CircuitP1100Starter Switch Circuit MalfunctionP1100Mass Air Flow Sensor Circuit IntermittentP1100BARO Sensor CircuitP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1101MAF Sensor Out of Self-Test RangeP1101Neutral Position Switch Circuit MalfunctionP1101MAF Sensor Out of Self-Test RangeP1101MAF Sensor Out of Self-Test RangeP1101MAF Sensor Out of Self-Test RangeP1101Intake Airflow System PerformanceP1101Intake Airflow System PerformanceP1102MAF Sensor In Range But Lower Than ExpectedP1102HO2S Heater Resistance Bank 1 Sensor 1P1102HO2S Heater Resistance Bank 1 Sensor 1P1102HO2S Heater Resistance Bank 1 Sensor 1P1102HO2S Heater Resistance Bank 1 Sensor 1P1102HO2S Heater Resistance Bank 1 Sensor 1P1102MAF Sensor In Range But Lower Than ExpectedP1102MAF Sensor In Range But Lower Than Expected

Other Powertrain Codes

P1103 on Other Vehicles

Lincoln Aviator

2003-2005 4.6L V8

Lincoln Aviator

2003-2005 4.6L V8 DOHC

Lincoln Aviator

2020-2024 3.0L Twin-Turbo V6

Lincoln Aviator

2020-2024 3.0L V6 Twin Turbo

Lincoln Aviator Grand Touring

2020-2024 3.0L Twin Turbo V6 PHEV

Lincoln Aviator Grand Touring

2020-2024 3.0L Twin-Turbo V6 Hybrid

Lincoln Aviator Grand Touring

2020-2024 3.0L V6 Twin Turbo Hybrid

Lincoln Blackwood

2002-2002 5.4L V8

Common Questions

What does code P1103 mean on a 2000-2006 Lincoln LS?

P1103 stands for "MAF Sensor In Range But Higher Than Expected". The MAF sensor signal is within the valid voltage range but consistently higher than expected by the PCM. This suggests the sensor is over-reporting airflow.

What are the symptoms of P1103 on a Lincoln LS?

Common symptoms of P1103 include: Check Engine Light, Rich running condition, Black exhaust smoke, Poor fuel economy, Rough idle.

What causes P1103 on a 2000-2006 Lincoln LS?

Common causes of P1103 include: Contaminated MAF sensor, Faulty MAF sensor, Air filter housing not sealed properly, PCM calibration issue.

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