Hyundai Car 1999-05

1.6L L4 VIN C Std 4

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Trouble Code: P2096



Post Catalyst Fuel Trim System Too Lean (Bank 1)

Possible Causes:



Three way catalytic converter (TWC)
 
Rear HO2S
 

Trouble Code: P2097



Post Catalyst Fuel Trim System Too Rich (Bank 1)

Possible Causes:



Three way catalytic converter (TWC)
 
Rear HO2S
 

Trouble Code: P2187



Fuel Trim Malfunction System Too Lean At Idle (Additive)

Possible Causes:



Faulty ignition system
 
EVAP PCSV malfunction
 
Faulty fuel injectors
 
Leak in exhaust system
 
Faulty MAP, TPS, ECTS
 
Faulty front HO2S
 
Faulty PCM
 

Trouble Code: P2188



System Too Rich At Idle (Bank 1)

Possible Causes:



Faulty ignition system
 
EVAP PCSV malfunction
 
Faulty fuel injectors
 
Leak in exhaust system
 
Faulty MAP, TPS, ECTS
 
Faulty front HO2S
 
Faulty PCM
 

Trouble Code: P2191



System Too Lean At Higher Load (Multiple) (Bank 1)

Possible Causes:



Faulty ignition system
 
EVAP PCSV malfunction
 
Faulty fuel injectors
 
Leak in exhaust system
 
Faulty MAP, TPS, ECTS
 
Faulty front HO2S
 
Faulty PCM
 

Trouble Code: P2192



System Too Rich At Higher Load (Bank 1)

Possible Causes:



Faulty ignition system
 
EVAP PCSV malfunction
 
Faulty fuel injectors
 
Leak in exhaust system
 
Faulty MAP, TPS, ECTS
 
Faulty front HO2S
 
Faulty PCM
 

Trouble Code: P2400



Evaporative Emission System Leak Detection Pump Control Circuit/Open

Possible Causes:



Open in control circuit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2401



Evaporative Emission System Leak Detection Pump Control Circuit Low

Possible Causes:



Open in control circuit
 
Short to ground in control circuit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2402



Evaporative Emission System Leak Detection Pump Control Circuit High

Possible Causes:



Short to battery in control circuit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2404



Evaporative Emission System Leak Detection Pump Sensor Circuit Range/Performance

Possible Causes:



Leakage on EVAP system
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2405



Evaporative Emission System Leak Detection Pump Sensor Circuit Low

Possible Causes:



Leakage on EVAP system
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2406



Evaporative Emission System Leak Detection Pump Sensor Circuit High

Possible Causes:



Leakage on EVAP system
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2407



Evaporative Emission System Leak Detection Pump Sensor Circuit Intermittent/Erratic

Possible Causes:



Leakage on EVAP system
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2418



Evaporative Emission System Switching Valve Control Circuit Open

Possible Causes:



Open in control circuit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2419



Evaporative Emission System Switching Valve Control Circuit Low

Possible Causes:



Open in control circuit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P2420



Evaporative Emission System Switching Valve Control Circuit High

Possible Causes:



Short to battery in control unit
 
Faulty DMTL
 
Faulty PCM
 

Trouble Code: P0422



Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is contaminated, damaged or has failed
 
Front HO2S is older (aged) than the rear HO2S (HO2S is lazy)
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 

Trouble Code: P0440



EVAP System Malfunction

Possible Causes:



Charcoal canister is loaded with fuel or moisture
 
ECT, IAT, MAP or TP sensor signal is out-of-calibration
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel tank pressure sensor is damaged or has failed
 
Fuel tank vapor line(s) blocked, damaged or disconnected
 
Purge or Vent solenoid control circuit open or shorted to ground
 
PCM has failed
 

Trouble Code: P1123



Fuel Trim Adaptive Air System Too Rich

Possible Causes:



Base engine "mechanical" fault affecting one or more cylinders
 
EVAP system component has failed or canister fuel saturated
 
Exhaust leaks located in front of the HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel delivery system supplying too much fuel during cruise or idle periods (e.g., faulty fuel pump, or faulty pressure regulator)
 
Fuel injector(s) is leaking or stuck partially open (one or more)
 
HO2S is contaminated, deteriorated or it has failed
 

Trouble Code: P1124



Fuel Trim Adaptive Air System Too Lean

Possible Causes:



Air leaks after the MAF sensor, or in the EGR or PCV system
 
Base engine "mechanical" fault affecting one or more cylinders
 
Exhaust leaks located in front of the HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel delivery system supplying too little fuel during cruise or idle periods (e.g., faulty fuel pump or dirty, restricted fuel filter)
 
Fuel injector (one or more) dirty or pressure regulator has failed
 
HO2S is contaminated, deteriorated or it has failed
 
Vehicle driven low on fuel or until it ran out of fuel
 

Trouble Code: P1127



Long Term Fuel Trim Multiplier System Too Rich

Possible Causes:



Base engine "mechanical" fault affecting one or more cylinders
 
EVAP system component has failed or canister fuel saturated
 
Exhaust leaks located in front of the HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel delivery system supplying too much fuel during cruise or idle periods (e.g., faulty fuel pump, or faulty pressure regulator)
 
Fuel injector(s) is leaking or stuck partially open (one or more)
 
HO2S is contaminated, deteriorated or it has failed
 

Trouble Code: P1128



Long Term Fuel Trim Multiplier System Too Lean

Possible Causes:



Air leaks after the MAF sensor, or in the EGR or PCV system
 
Base engine "mechanical" fault affecting one or more cylinders
 
Exhaust leaks located in front of the HO2S location
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel delivery system supplying too little fuel during cruise or idle periods (e.g., faulty fuel pump or dirty, restricted fuel filter)
 
Fuel injector (one or more) dirty or pressure regulator has failed
 
HO2S is contaminated, deteriorated or it has failed
 
Vehicle driven low on fuel or until it ran out of fuel
 

Trouble Code: P01510



Idle Speed Control Actuator Opening Coil Circuit Shorted

Possible Causes:



Idle speed actuator opening coil circuit shorted to system power (B+)
 
Idle speed actuator is damaged or has failed
 
PCM has failed
 

Trouble Code: P01513



Idle Speed Control Actuator Opening Coil Circuit Open

Possible Causes:



Idle speed actuator opening coil circuit open or shorted to ground
 
Idle speed actuator is damaged or has failed
 
PCM has failed
 

Trouble Code: P01552



Idle Speed Control Actuator Closing Coil Circuit Shorted

Possible Causes:



Idle speed actuator closing coil circuit shorted to system power
 
Idle speed actuator is damaged or has failed
 
PCM has failed
 

Trouble Code: P01553



Idle Speed Control Actuator Closing Coil Circuit Open

Possible Causes:



Idle speed actuator closing coil circuit is open or shorted to ground
 
Idle speed actuator is damaged or has failed
 
PCM has failed
 

Trouble Code: P01605



Rough Road Sensor Circuit Malfunction

Possible Causes:



Acceleration sensor circuit is open or shorted to ground
 
Acceleration sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P01606



Rough Road Sensor Circuit Not Valid

Possible Causes:



Acceleration sensor circuit is open or shorted to ground
 
Acceleration sensor is damaged or has failed
 
PCM has failed
 

 
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