OBD II Fault Code P1103 :

Description of Fault code P1103

MASS AIR FLOW (MAF) SENSOR SIGNAL HIGHER THAN EXPECTED

Possible failuer P1103

• MAF Sensor output failure
• Intake Air leak
• EGR Valve Actuator Position Stuck

Diagnostic Procedure using AutoHex II Scan Tool

• The ratio between the target value of the MAF Sensor and the output value of the sensor is monitored in the EGR inactive field. (Amount of monitor = Sensor output value / Presumed value)

Test Conditions using AutoHex tester

• Baro > 0.000 hPa
• 70deg < Engine Coolant Temperature (ECT)
• IAT1 variation < 10 degC/sec
• Fuel injection quantity < 0 mg
• 90 < Intake Shutter position < 110 %
• 0 < Swirl position < 90 deg
• EGR complete shutting > 1000 msec
• Engine running
• 2 sec > Engine starting
• 1500 < Ne < 3500 rpm
• P0102, P0103, P1102, P1103, P1401, P2228, P2229, P1069, P0045, P0047, P0048, P1027, P0107, P0108, P0116, P0126, P0117, P0118, P0403, P0489, P0490, P1405, P0097, P0098, P2199, P0652, P0653, P2004, P2006, P2008, P2009, P2010, P1028, P2016 and P2017 are not detected.

Clear Fault codes Conditions

• The ratio between the target value of the MAF Sensor and the output value of the sensor is monitored in the EGR inactive field. (Amount of monitor = Sensor output value / Presumed value)

MIL Status

• Check Engine Light ON

Note:

• AutoHex II is a professional Auto diagnostic.
• This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
  To get the accurate fault code description you may use AutoHex II

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