Possible causes – Faulty HO2S11 Sensor– Exhaust leak near HO2S11 Sensor– HO2S11 Sensor harness is open or shorted– HO2S11 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty HO2S11 Sensor– Exhaust leak near HO2S11 Sensor– HO2S11 Sensor harness is open or shorted– HO2S11 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Manifold Absolute Pressure Sensor– Manifold Absolute Pressure Sensor harness is open or shorted– Manifold Absolute Pressure Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1102 HYUNDAI Description Manifold
Possible causes – Faulty Mass Air Flow Sensor– Air leak before or after sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor circuit poor electrical connection When is the code detected? The Engine Control Module
Possible causes – Faulty Mass Air Flow Sensor– Air leak before or after sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor circuit poor electrical connection When is the code detected? The Engine Control Module
Possible causes – Faulty mass air flow sensor– 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– Intake air leaks Tech notes Before
Possible causes – Faulty mass air flow sensor– 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– Intake air leaks Tech notes Before
Possible causes – Faulty Pressure Sources Solenoid Valve– Pressure Sources Solenoid Valve harness is open or shorted– Pressure Sources Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Vacuum Control Solenoid Valve– Vacuum Control Solenoid Valve harness is open or shorted– Vacuum Control Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Viscous/Cabin Heater Relay– Viscous/Cabin Heater Relay harness is open or shorted– Viscous/Cabin Heater Relay circuit poor electrical connection When is the code detected? The ECM has detected an excessive current condition on the Viscous/Cabin Heater Relay
Possible causes – Faulty Viscous/Cabin Heater Relay– Viscous/Cabin Heater Relay harness is open or shorted– Viscous/Cabin Heater Relay circuit poor electrical connection When is the code detected? The ECM has detected an excessive current condition on the Viscous/Cabin Heater Relay
Possible causes – Faulty Viscous/Cabin Heater Relay– Viscous/Cabin Heater Relay harness is open or shorted– Viscous/Cabin Heater Relay circuit poor electrical connection When is the code detected? The ECM has detected an excessive current condition on the Viscous/Cabin Heater Relay
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1102 Description Mass Air Flow Sensor In Range But Lower Than Expected is one of the definitions for the P1102; however your vehicle’s manufacturer may have a different definition