Tucson 2006-2008

2.0L L4 VIN B Auto 6

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Trouble Code: P0125



Excessive Time To Enter Closed Loop

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
ECT sensor has failed
 
Inspect for low coolant level or an incorrect coolant mixture
 

Trouble Code: P0125



Insufficient Coolant Temperature for Closed Loop

Possible Causes:



Check for low coolant level or incorrect coolant mixture
 
Cooling system component failure (thermostat stuck open)
 
ECT sensor is out of calibration ("skewed") or it has failed
 
PCM has failed
 

Trouble Code: P0128



Thermostat Malfunction Detected

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
ECT sensor is out-of-calibration or skewed
 
Inspect for low coolant level or for an incorrect coolant mixture
 
TSB 01-36-008 (5/01) contains information about this code
 

Trouble Code: P0128



Thermostat Malfunction Detected

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
ECT sensor is out-of-calibration or skewed
 
Inspect for low coolant level or for an incorrect coolant mixture
 

Trouble Code: P0128



Coolant Thermostat (Coolant Temperature below Thermostat Regulating Temperature)

Possible Causes:



Faulty cooling system
 
Faulty ECT sensor
 
Poor connection or damaged harness
 

Trouble Code: P0130



HO2S-11 (Bank 1 Sensor 1) Circuit Malfunction

Possible Causes:



HO2S signal circuit is open between the sensor and the PCM
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S signal circuit is shorted to VREF or system power (B+)
 
HO2S is damaged, contaminated or it has failed
 
PCM has failed
 

Trouble Code: P0131



HO2S-11 (Bank 1 Sensor 1) Circuit Low Input

Possible Causes:



Low fuel pressure, fuel filter restricted or fuel injectors plugged
 
HO2S signal circuit is shorted to ground (an intermittent fault)
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0132



HO2S-11 (Bank 1 Sensor 1) Circuit High Input

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S signal circuit is shorted to the heater power circuit
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0133



HO2S-11 (Bank 1 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: P0133



HO2S-11 (Bank 1 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)
 
TSB 02-360010 (3/02) contains information for this code
 

Trouble Code: P0134



HO2S-11 (Bank 1 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: P0134



HO2S-11 (Bank 1 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
 
TSB 02-360010 (3/02) contains information about this code
 

Trouble Code: P0136



HO2S-12 (Bank 1 Sensor 2) Circuit Malfunction

Possible Causes:



HO2S signal circuit is open between the sensor and the PCM
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S signal circuit is shorted to VREF or system power (B+)
 
HO2S is damaged, contaminated or it has failed
 
PCM has failed
 

Trouble Code: P0137



HO2S-12 (Bank 1 Sensor 2) Circuit Low Input

Possible Causes:



Low fuel pressure, fuel filter restricted or fuel injectors plugged
 
HO2S signal circuit is shorted to ground (an intermittent fault)
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0138



HO2S-12 (Bank 1 Sensor 2) Circuit High Input

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S signal circuit is shorted to the heater power circuit
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0139



HO2S-12 (Bank 1 Sensor 2) 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: P0140



HO2S-12 (Bank 1 Sensor 2) Circuit No Activity

Possible Causes:



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

Trouble Code: P0151



HO2S Circuit Low Voltage (Bank 2 Sensor 1)

Possible Causes:



Poor connection
 
Short to ground in harness
 
Faulty PCM
 
HO2S has deteriorated, is contaminated or has failed
 

Trouble Code: P0152



HO2S-21 (Bank 2 Sensor 1) Circuit High Input

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S signal circuit is shorted to the heater power circuit
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 

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: P0157



HO2S Circuit Low Voltage (Bank 2 Sensor 2)

Possible Causes:



Poor connection
 
Short to ground in HO2S circuit
 
Faulty HO2S
 
Faulty PCM
 

Trouble Code: P0158



HO2S Circuit High Voltage (Bank 2 Sensor 2)

Possible Causes:



Poor connection
 
Short to battery in HO2S circuit
 
Faulty HO2S
 
Faulty PCM
 

Trouble Code: P0159



HO2S-22 (Bank 2 Sensor 2) Rationality Check

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: P0160



HO2S-22 (Bank 2 Sensor 2) 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: P0196



Engine Oil Temperature Sensor Range/Performance

Possible Causes:



Contact resistance in connectors
 
faulty OTS
 

Trouble Code: P0197



Engine Oil temperature Sensor Low Input

Possible Causes:



Short circuit to ground
 
Contact resistance in connectors
 
faulty OTS
 

Trouble Code: P0198



Engine Oil Temperature Sensor High Input

Possible Causes:



Open circuit to battery
 
Contact resistance in connectors
 
faulty OTS
 

Trouble Code: P0217



Engine Coolant Over Temperature Condition

Possible Causes:



Poor connection
 
Lack of engine coolant
 
Water pump problems
 
ECTS
 
Faulty PCM
 

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
 

 
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