Powertrain Codes

P0106

Technical Definition:

Manifold Absolute Pressure (MAP) / Barometric Pressure (BARO) Circuit Range / Performance

Trouble Code: P0106
Address: 0x0106
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Manifold Absolute Pressure sensor
– Manifold Absolute Pressure harness is open or shorted
– Manifold Absolute Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Specific Makes:

– Engine rough idle
– Engine hesitation

P0107

Technical Definition:

Manifold Absolute Pressure (MAP) / Barometric Pressure (BARO) Circuit Low

Trouble Code: P0107
Address: 0x0107
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Manifold Absolute Pressure sensor
– Manifold Absolute Pressure harness is open or shorted
– Manifold Absolute Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Specific Makes:

– Engine rough idle
– Engine hesitation

P0108

Technical Definition:

Manifold Absolute Pressure (MAP) / Barometric Pressure (BARO) Circuit High

Trouble Code: P0108
Address: 0x0108
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Manifold Absolute Pressure sensor
– Manifold Absolute Pressure harness is open or shorted
– Manifold Absolute Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Specific Makes:

– Engine rough idle
– Engine hesitation

P0109

Technical Definition:

Manifold Absolute Pressure (MAP) / Barometric Pressure (BARO) Circuit Intermittent

Trouble Code: P0109
Address: 0x0109
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Manifold Absolute Pressure sensor
– Manifold Absolute Pressure harness is open or shorted
– Manifold Absolute Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Specific Makes:

– Engine rough idle
– Engine hesitation

P0104

Technical Definition:

Mass or Volume Air Flow A Circuit Intermittent

Trouble Code: P0104
Address: 0x0104
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Mass or Volume Air Flow Circuit Intermittent

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke

P0105

Technical Definition:

Manifold Absolute Pressure (MAP) / Barometric Pressure (BARO) Circuit

Trouble Code: P0105
Address: 0x0105
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

The MAP (Manifold Absolute Pressure) sensor is part of the fuel management system. It reacts to changes in engine manifold pressure. The PCM (Powertrain Control Module) monitors the MAP sensor continually to properly run the engine. Changes in engine load require changes in the amount of fuel injected, and timing of the ignition system, etc.

Possible Causes:
  • MAP sensor vacuum hose disconnected or plugged
  • Bad MAP sensor
  • Bad TPS
  • Damaged or problematic MAP sensor connector
  • Damaged or problematic TPS connector
  • Damaged wiring
  • Short to reference voltage on signal circuit of MAP sensor
  • Loss of ground to MAP sensor or TPS
  • Open on signal circuit of MAP sensor
  • Bad PCM

Possible Symptoms:
  • Poor running engine
  • Engine runs rich
  • Engine won’t idle
  • Engine backfires through tailpipe
  • Engine misfire under load or at idle
  • MIL (Malfunction Indicator Lamp) illumination
  • In some extreme cases there may be no symptoms other than MIL illumination

Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Manifold Absolute Pressure sensor
– Manifold Absolute Pressure harness is open or shorted
– Manifold Absolute Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Specific Makes:

– Engine rough idle
– Engine hesitation

P0101

Technical Definition:

Mass or Volume Air Flow A Circuit Range / Performance

Trouble Code: P0101
Address: 0x0101
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Mass or Volume Air Flow Circuit Range/Performance Problem

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke

P0102

Technical Definition:

Mass or Volume Air Flow A Circuit Low

Trouble Code: P0102
Address: 0x0102
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Mass or Volume Air Flow Circuit Low Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke

P0103

Technical Definition:

Mass or Volume Air Flow A Circuit High

Trouble Code: P0103
Address: 0x0103
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Mass or Volume Air Flow Circuit High Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke

P0100

Technical Definition:

Mass or Volume Air Flow A Circuit Malfunction

Trouble Code: P0100
Address: 0x0100
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

Possible Causes:

Possible Symptoms:

Mass Air Flow Sensor

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Specific Makes:

– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke