Hyundai Car 1999-05

1.6L L4 VIN C Auto 2

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Trouble Code: P0171



Fuel System Too Lean (Bank 1)

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 A/FS or 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: P0172



Fuel System Too Rich (Bank 1)

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 MAF)
 
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: P0201



Fuel Injector 1 Circuit Malfunction

Possible Causes:



Injector 1 control circuit open or grounded
 
Injector 1 control circuit shorted to system power
 
Injector 1 power (B+) circuit open
 
Injector 1 damaged or has failed
 
PCM has failed
 

Trouble Code: P0202



Fuel Injector 2 Circuit Malfunction

Possible Causes:



Injector 2 control circuit open or grounded
 
Injector 2 control circuit shorted to system power
 
Injector 2 power (B+) circuit open
 
Injector 2 damaged or has failed
 
PCM has failed
 

Trouble Code: P0203



Fuel Injector 3 Circuit Malfunction

Possible Causes:



Injector 3 control circuit open or grounded
 
Injector 3 control circuit shorted to system power
 
Injector 3 power (B+) circuit open
 
Injector 3 damaged or has failed
 
PCM has failed
 

Trouble Code: P0204



Fuel Injector 4 Circuit Malfunction

Possible Causes:



Injector 4 control circuit open or grounded
 
Injector 4 control circuit shorted to system power
 
Injector 4 power (B+) circuit open
 
Injector 4 damaged or has failed
 
PCM has failed
 

Trouble Code: P0230



Fuel Pump Circuit Malfunction

Possible Causes:



Fuel pump control circuit is open or shorted to ground
 
Fuel pump relay power circuit from ignition switch is open
 
Fuel pump relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P0261



Cylinder 1- Injector Circuit Low

Possible Causes:



Open in power supply harness
 
Short to ground in control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0262



Cylinder 1- Injector Circuit High

Possible Causes:



Open or short to battery control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0264



Cylinder 2- Injector Circuit Low

Possible Causes:



Open in power supply harness
 
Short to ground in control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0265



Cylinder 2- Injector Circuit High

Possible Causes:



Open or short to battery control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0267



Cylinder 3- Injector Circuit Low

Possible Causes:



Open in power supply harness
 
Short to ground in control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0268



Cylinder 3- Injector Circuit High

Possible Causes:



Open or short to battery control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0270



Cylinder 4- Injector Circuit Low

Possible Causes:



Open in power supply harness
 
Short to ground in control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0271



Cylinder 4- Injector Circuit High

Possible Causes:



Open or short to battery control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0300



Multiple Misfire Detected

Possible Causes:



Ignition system or fuel metering fault in 2 or more cylinders
 
Fuel pressure too low or too high, fuel supply contaminated
 
CKP/CMP signals, EVAP canister saturated, EGR valve stuck
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only one cylinder
 
Fuel metering fault that affects only one cylinder
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Ignition system fault (i.e., a coil) that affects only one cylinder
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only one cylinder
 
Fuel metering fault that affects only one cylinder
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Ignition system fault (i.e., a coil) that affects only one cylinder
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only one cylinder
 
Fuel metering fault that affects only one cylinder
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Ignition system fault (i.e., a coil) that affects only one cylinder
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Base engine mechanical fault that affects only one cylinder
 
Fuel metering fault that affects only one cylinder
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Ignition system fault (i.e., a coil) that affects only one cylinder
 

Trouble Code: P0320



Ignition Failure Sensor Circuit Malfunction

Possible Causes:



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

Trouble Code: P0325



Knock Sensor 1 Circuit Malfunction

Possible Causes:



KS signal circuit is open, shorted to ground or to system power
 
KS ground circuit is open between sensor and PCM
 
Knock sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0326



Knock Sensor 2 Range/Performance

Possible Causes:



KS signal circuit is open, shorted to ground or to system power
 
Knock sensor is damaged or it has failed (an intermittent fault)
 
PCM has failed
 

Trouble Code: P0330



Knock Sensor 2 Circuit Malfunction

Possible Causes:



KS signal circuit is open, shorted to ground or to system power
 
KS ground circuit is open between sensor and PCM
 
Knock sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0335



Crankshaft Position Sensor 'A' Circuit Malfunction

Possible Causes:



CKP (Magnetic) sensor signal (+) or (-) circuit is open or shorted to ground between the sensor and the PCM
 
CKP (Magnetic) sensor signal is damaged or has failed
 
PCM has failed
 

Trouble Code: P0336



Crankshaft Position Sensor Performance

Possible Causes:



CKP sensor signal is open or shorted to ground (Intermittent)
 
CKP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0340



Camshaft Position Sensor Circuit Malfunction

Possible Causes:



CMP (Resistor) sensor signal circuit open or shorted to ground
 
CMP (Resistor) sensor ground circuit is open
 
CMP (Resistor) sensor power circuit open (test power to relay)
 
CMP (Resistor) sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0342



Camshaft Position Sensor Low Input

Possible Causes:



CMP (Hall) sensor signal circuit is open or shorted (intermittent)
 
CMP (Hall) sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0343



Camshaft Position Sensor High Input

Possible Causes:



CMP (Hall) sensor signal circuit is open or shorted to ground
 
CMP (Hall) sensor ground circuit is open
 
CMP (Hall) sensor power circuit is open (check fuse in the I/P)
 
CMP (Hall) sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0420



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: P0421



Warm up 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: P0441



EVAP System Incorrect Purge Flow (Stuck Open)

Possible Causes:



Charcoal canister is damaged, clogged or restricted
 
Purge solenoid control circuit open, shorted to ground or power
 
Purge solenoid power circuit is open (check the relay or fuse)
 
Purge valve vacuum line is clogged or contains water or debris
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel tank or fuel tank sender assembly 'O' ring is leaking
 
Fuel tank vapor line(s) blocked, damaged or disconnected
 
PCM has failed
 

Trouble Code: P0442



EVAP System Large Leak (0.040") Detected

Possible Causes:



Canister Purge valve is damaged, leaking or it has failed
 
Charcoal canister is loaded with fuel or moisture
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel tank is cracked (leaking), or a leak exists in the 'O' ring
 
Fuel tank pressure sensor is damaged or has failed
 
Fuel vapor line(s), fuel pipes or hoses damaged or leaking
 
Purge solenoid or vent solenoid damaged, leaking or sticking
 
PCM has failed
 

Trouble Code: P0443



EVAP Purge Solenoid Circuit Malfunction

Possible Causes:



Purge solenoid control circuit is open or shorted to ground
 
Purge solenoid power circuit is open (check the power source)
 
Purge control solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0444



EVAP Purge Solenoid Circuit Malfunction (Open)

Possible Causes:



Purge solenoid control circuit open between solenoid and PCM
 
Purge solenoid power circuit is open (check the power source)
 
Purge control solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0445



EVAP Purge Solenoid Circuit Malfunction (Shorted)

Possible Causes:



Purge solenoid control circuit is shorted to system power
 
Purge control solenoid is damaged or has failed (short circuit)
 
PCM has failed
 

Trouble Code: P0446



EVAP Vent Control Solenoid Circuit Performance (Closed)

Possible Causes:



Vent solenoid control circuit is shorted to ground
 
Vent solenoid power circuit is open (check the power source)
 
Vent control solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0447



EVAP Vent Solenoid Circuit Short To Ground Malfunction

Possible Causes:



Purge solenoid control circuit is shorted to ground
 
Purge solenoid power circuit is open (check the power source)
 
Purge solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0448



EVAP Vent Solenoid Circuit Shorted To Power Malfunction

Possible Causes:



Purge solenoid control circuit is shorted to system power
 
Purge solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0451



EVAP Pressure Sensor Performance

Possible Causes:



Pressure sensor vacuum hoses loose or damaged
 
Pressure sensor is damaged or out-of-calibration
 
VSV for the EVAP pressure sensor is damaged or has failed
 
PCM has failed
 

 
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