HHR 2006-2008

2.0L L4 VIN X Auto 1

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2.0L L4 VIN X Auto

Trouble Code: P000A



Intake Camshaft Position (CMP) System Slow Response

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 

Trouble Code: P0010



Intake Camshaft Position (CMP) System Performance

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0011



Intake Camshaft Position (CMP) System Performance

Possible Causes:



Control circuit for an open or high resistance
 
Torn,restricted, mis-positioned, or missing screens at the CMP actuator solenoid
 
Oil leaks between the oil sealing lands of the CMP actuator solenoid
 
Lands of the CMP actuator solenoid for nicks
 
Crankshaft reluctor wheel for being mis-positioned
 
Oil seepage at the CMP actuator solenoind connector
 

Trouble Code: P0013



Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0014



Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit (Bank 1)

Possible Causes:



Engine oil low or in need of changing
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid ignition voltage for an open/high resistance
 
CMP Actuator Solenoid control circuit for an open/high resistance
 
Engine timing components
 
CMP Actuator Solenoid malfunction
 
ECM has failed
 

Trouble Code: P0016



Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation

Possible Causes:



Timing chain tensioner condition
 
Incorrectly installed timing chain
 
Excessive play in the timing chain
 
Cam actuator that is stuck in the full advance or retard position
 
Crankshaft reluctor wheel that has moved in relationship to top dead * Center (TDC) on the crankshaft
 

Trouble Code: P0017



Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation

Possible Causes:



Timing chain tensioner condition
 
Incorrectly installed timing chain
 
Excessive play in the timing chain
 
Cam actuator that is stuck in the full advance or retard position
 
Crankshaft reluctor wheel that has moved in relationship to top dead * Center (TDC) on the crankshaft
 

Trouble Code: P0030



HO2S Heater Control Circuit Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0031



HO2S Heater Control Circuit Low Voltage Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0032



HO2S Heater Control Circuit High Voltage Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0036



HO2S Heater Control Circuit Sensor 2

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0037



HO2S Heater Control Circuit Low Voltage Sensor 2

Possible Causes:



HO2S low control circuit is shorted to system power (B+)
 
HO2S low control circuit driver is shorted inside the ECM
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0038



HO2S Heater Control Circuit High Voltage Sensor 2

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0053



HO2S Heater Resistance Circuit Sensor 1

Possible Causes:



HO2S ignition circuit for a short to ground or an open/high resistance
 
HO2S low control circuit driver is shorted to ground
 
HO2S is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0068



Throttle Body Airflow Performance

Possible Causes:



Throttle body for dirt, debris, and coking
 
Vacuum hoses for splits, kinks, and proper connections
 
Loose or damaged throttle blade
 
Broken throttle shaft
 
Any throttle body damage
 
Throttle body assembly has failed
 

Trouble Code: P0096



Intake Air Temperature (IAT) Sensor 2 Performance

Possible Causes:



MAF/IAT low reference circuit for an open/high resistance
 
MAF/IAT low reference circuit for an open/high resistance
 
MAF/IAT signal circuit for an open/high resistance
 
MAF/IAT sensor has failed
 
ECM has failed
 

Trouble Code: P009A



Intake Air Temperature (IAT)-Ambient Air Temperature (AAT) Correlation

Possible Causes:



AAT sensor reference circuit high resistance
 
AAT sensor cinal circuit high resistance
 
AAT sensor has failed
 
ECM has failed
 

Trouble Code: P0157



HO2S-22 (Bank 2 Sensor 2) Circuit Low Input

Possible Causes:



Air leaks in the exhaust system, intake manifold, vacuum lines
 
Engine misfire condition present (look for P0300 series codes)
 
Fuel system too lean (possible low fuel pressure, water in fuel)
 
HO2S signal circuit is shorted to the sensor or chassis ground
 
HO2S is damaged (i.e., cracked) or air reference hole clogged
 
ECM has failed
 

Trouble Code: P0158



HO2S-22 (Bank 2 Sensor 2) Circuit High Input

Possible Causes:



Fuel system rich (high fuel pressure, fuel pressure regulator leaking, or injector sticking)
 
HO2S element is silicon, water or fuel contaminated
 
HO2S signal tracking (water intrusion) in the connector causing a short between the HO2S signal and heater power circuits
 
ECM has failed
 

Trouble Code: P0160



HO2S-22 (Bank 2 Sensor 2) Insufficient Activity

Possible Causes:



HO2S heater is damaged or it has failed
 
HO2S signal or ground circuit has a high resistance condition
 
HO2S has failed (i.e., it is silicon, water or fuel contaminated)
 
ECM has failed
 

Trouble Code: P0161



HO2S-22 (Bank 2 Sensor 2) Heater Circuit Malfunction

Possible Causes:



HO2S heater low control circuit is open or shorted to ground
 
HO2S heater circuit is open or it is shorted to ground
 
HO2S heater power circuit is open (test O2A fuse in fuse block)
 
HO2S heater element is damaged or has failed
 
ECM has failed
 

Trouble Code: P0171



Fuel Trim System Lean (Bank 1)

Possible Causes:



Air leaks in intake manifold, exhaust pipes or exhaust manifold
 
Fuel control sensor is out of calibration (ECT, IAT or MAF)
 
Low fuel pressure (fuel filter clogged, pressure regulator failure)
 
One or more injectors restricted or pressure regulator has failed
 
HO2S element is contaminated, deteriorated or has failed
 
Vacuum hose is disconnected, broken, leaking or loose
 

Trouble Code: P0172



Fuel Trim System Rich

Possible Causes:



Base engine "mechanical" fault affecting one or more cylinders
 
EVAP system component has failed or canister fuel saturated
 
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
 
Fuel system supplying too much fuel at idle speed or at cruise
 
Fuel injector(s) is leaking or stuck partially open (one or more)
 
HO2S is contaminated, deteriorated or it has failed
 

Trouble Code: P0172



Fuel Trim System Rich (Bank 1)

Possible Causes:



Base engine "mechanical" fault affecting one or more cylinders
 
Excess fuel vapors in crankcase (the oil needs to be changed)
 
EVAP system component has failed or canister fuel saturated
 
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 Control Circuit Malfunction

Possible Causes:



Injector 1 power circuit (B+) is open (check the power fuse)
 
Injector 1 control circuit is open between injector and ECM
 
Injector 1 control circuit is grounded between injector and ECM
 
Injector 1 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0202



Fuel Injector 2 Control Circuit Malfunction

Possible Causes:



Injector 2 power circuit (B+) is open (check the power fuse)
 
Injector 2 control circuit is open between injector and ECM
 
Injector 2 control circuit is grounded between injector and ECM
 
Injector 2 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0203



Fuel Injector 3 Control Circuit Malfunction

Possible Causes:



Injector 3 power circuit (B+) is open (check the power fuse)
 
Injector 3 control circuit is open between injector and ECM
 
Injector 3 control circuit is grounded between injector and ECM
 
Injector 3 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0204



Fuel Injector 4 Control Circuit Malfunction

Possible Causes:



Injector 4 power circuit (B+) is open (check the power fuse)
 
Injector 4 control circuit is open between injector and ECM
 
Injector 4 control circuit is grounded between injector and ECM
 
Injector 4 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0205



Fuel Injector 5 Control Circuit Malfunction

Possible Causes:



Injector 5 power circuit (B+) is open (check the power fuse)
 
Injector 5 control circuit is open between injector and ECM
 
Injector 5 control circuit is grounded between injector and ECM
 
Injector 5 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0206



Fuel Injector 6 Control Circuit Malfunction

Possible Causes:



Injector 6 power circuit (B+) is open (check the power fuse)
 
Injector 6 control circuit is open between injector and ECM
 
Injector 6 control circuit is grounded between injector and ECM
 
Injector 6 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0207



Fuel Injector 7 Control Circuit Malfunction

Possible Causes:



Injector 7 power circuit (B+) is open (check the power fuse)
 
Injector 7 control circuit is open between injector and ECM
 
Injector 7 control circuit is grounded between injector and ECM
 
Injector 7 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0208



Fuel Injector 8 Control Circuit Malfunction

Possible Causes:



Injector 8 power circuit (B+) is open (check the power fuse)
 
Injector 8 control circuit is open between injector and ECM
 
Injector 8 control circuit is grounded between injector and ECM
 
Injector 8 is damaged or it has failed
 
ECM is damaged
 

Trouble Code: P0222



Throttle Position (TP) Sensor 2 Circuit High Voltage

Possible Causes:



TP sensor low reference circuit for an open/high resistance
 
TP sensor 5-volt reference circuit for a short to ground or an open/high resistance
 
TP sensor 5-volt reference circuit for a short to voltage
 
TP sensor signal circuit for a short to voltage
 
TP sensor signal circuit for a short to ground or an open/high resistance
 
TP sensor has failed (replace throttle body)
 
ECM has failed
 

Trouble Code: P0223



Fuel Pump Relay Control Circuit

Possible Causes:



Fuel pump relay shorted to ground
 
Fuel pump relay shorted to Voltage
 
Fuel pump relay open condition
 
Fuel pump relay has failed
 
ECM has failed
 

Trouble Code: P0261



Injector 1 Control Circuit High Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0262



Injector 2 Control Circuit Low Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0264



Injector 2 Control Circuit High Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0265



Injector 3 Control Circuit Low Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0267



Injector 3 Control Circuit High Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

Trouble Code: P0268



Injector 4 Control Circuit Low Voltage

Possible Causes:



High voltage control circuit shorted to voltage
 
High voltage control circuit short to ground or an open/high resistance
 
Low voltage control circuit shorted to voltage
 
Low voltage control circuit short to ground or an open/high resistance
 
Faulty fuel injector
 
ECM has failed.
 

 
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