Hyundai Santa Fe 2001-05

2.4L L4 - Auto 2

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Trouble Code: P0153



HO2S-21 (Bank 2 Sensor 1) Slow Response

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S element is contaminated or it has failed
 
HO2S heater is damaged or has failed
 
Intake air leaks, exhaust manifold leaks or PCV system leaks
 
MAF sensor out of calibration (it may be dirty or contaminated)
 

Trouble Code: P0154



HO2S-21 (Bank 2 Sensor 1) No Activity Detected

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S element is contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0170



Fuel Trim Too Rich or 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: 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: P0174



Fuel System Too Lean (Bank 2)

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: P0175



Fuel System Too Rich (Bank 2)

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: P0181



Fuel Temperature Sensor -A- Circuit Range/Performance

Possible Causes:



Poor connection
 
Faulty fuel temperature sensor
 
Faulty PCM
 

Trouble Code: P0182



Fuel Temperature Sensor -A- Circuit Low Input

Possible Causes:



Poor connection
 
Short to ground in fuel temperature sensor circuit
 
Faulty fuel temperature sensor
 
Faulty PCM
 

Trouble Code: P0183



Fuel Temperature Sensor -A- Circuit High Input

Possible Causes:



Poor connection
 
Open in fuel temperature sensor circuit
 
Faulty fuel temperature sensor
 
Faulty PCM
 

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: P0220



Electronic Throttle System Throttle Position Sensor Range/Performance

Possible Causes:



APP sensor signal circuit is open or shorted to ground
 
APP sensor signal circuit is shorted to VREF or system power
 
APP sensor power circuit is open between sensor and the PCM
 
APP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0222



Throttle/Pedal Position Sensor/Switch -B- Circuit Low Input

Possible Causes:



Poor connection
 
Open or short to ground in TPS circuit
 
Faulty TPS
 
Faulty PCM
 

Trouble Code: P0223



Throttle/Pedal Position Sensor/Switch -B- Circuit High Input

Possible Causes:



Poor connection
 
Open or short to ground in TPS circuit
 
Faulty TPS
 
Faulty PCM
 

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: P0305



Cylinder 5 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: P0306



Cylinder 6 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
 

 
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