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2004 Kia Rio 1.6L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to Asian Driveability on 9/20/2012 5 Replies

I'm getting some weird readings on my Genisys on this vehicle. MAF is reading 138.9 g/s at [...], however testing the MAF with a multimeter it tested .5v at idle and around 4.4 at about 3500rpm. We also tested the TPS with a multimeter and read fine as well. W...

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car Vehicle Data

2004 Kia Rio

VIN KNADC12504
Engine1.6 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursOn Accel, Intermittently

Trouble Codes

P0030Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Relay Circuit Malfunction
P0101Mass Airflow Sensor Range/Performance
P0102Mass Airflow Sensor Circuit Low Voltage
P0121Throttle Position Sensor Range/Performance
P0172Fuel System Too Rich (Bank 1)
P1121TP Sensor Signal Lower Than Expected
Message Closed

car Vehicle Data

2004 Kia Rio

VIN KNADC12504
Engine1.6 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursOn Accel, Intermittently

Trouble Codes

P0030Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Relay Circuit Malfunction
P0101Mass Airflow Sensor Range/Performance
P0102Mass Airflow Sensor Circuit Low Voltage
P0121Throttle Position Sensor Range/Performance
P0172Fuel System Too Rich (Bank 1)
P1121TP Sensor Signal Lower Than Expected