CTS 2003-2005

3.2L V6 VIN N Std 1

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3.2L V6 VIN N Std

Trouble Code: B1327



Dash Integration Module Power Circuit Low Input

Possible Causes:



A Message is sent over the Class 2 circuit to all other modules
 
Battery power circuit to the DIM is open or has a high resistance condition
 
DIM has failed
 

Trouble Code: B1328



Dash Integration Module Power Circuit High Input

Possible Causes:



A Message is sent over the Class 2 circuit to all other modules
 
Battery power circuit to the DIM is open or has a high resistance condition
 
DIM has failed
 

Trouble Code: B1513



Instrument Panel Cluster Voltage Low Input

Possible Causes:



Check the operation of the Charging system (Generator)
 
The charge indicator and driver warning message are set in the driver information center (DIC)
 
IPC is damaged or has failed
 

Trouble Code: B1514



Instrument Panel Cluster Voltage High Input

Possible Causes:



Check the operation of the Charging system (Generator)
 
The charge indicator and driver warning message are set in the driver information center (DIC)
 
IPC is damaged or has failed
 

Trouble Code: P0030



HO2S-11 (Bank 1 Sensor 1) Heater Low Side Open Circuit

Possible Causes:



HO2S heater low side control circuit open or shorted to ground
 
HO2S heater power circuit is open (check the PRE O2 fuse)
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0031



HO2S-11 (Bank 1 Sensor 1) Heater Low Side Short Circuit

Possible Causes:



HO2S heater low side control circuit is shorted to ground
 
HO2S heater low side circuit is shorted to signal or ground
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0032



HO2S-11 (Bank 1 Sensor 1) Heater Low Side Short To B+

Possible Causes:



HO2S heater low side control circuit is shorted to system power
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0036



HO2S-12 (Bank 1 Sensor 2) Heater Low Side Open Circuit

Possible Causes:



HO2S heater low side control circuit open or shorted to ground
 
HO2S heater power circuit is open (check the PRE O2 fuse)
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0037



HO2S-12 (Bank 1 Sensor 2) Heater Low Side Short Circuit

Possible Causes:



HO2S heater low side control circuit is shorted to ground
 
HO2S heater low side circuit is shorted to signal or ground
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0038



HO2S-12 (Bank 1 Sensor 2) Heater Low Side Short To B+

Possible Causes:



HO2S heater low side control circuit is shorted to system power
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0050



HO2S-21 (Bank 2 Sensor 1) Heater Low Side Open Circuit

Possible Causes:



HO2S heater low side control circuit is open shorted to ground
 
HO2S heater power circuit is open (check the POST O2 fuse)
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0051



HO2S-21 (Bank 2 Sensor 1) Heater Low Side Short Circuit

Possible Causes:



HO2S heater low side control circuit is shorted to ground
 
HO2S heater low side circuit is shorted to signal or ground
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0052



HO2S-21 (Bank 2 Sensor 1) Heater Low Side Short To B+

Possible Causes:



HO2S heater low side control circuit is shorted to system power
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0056



HO2S-22 (Bank 2 Sensor 2) Heater Low Side Open Circuit

Possible Causes:



HO2S heater low side control circuit open or shorted to ground
 
HO2S heater power circuit is open (check the POST O2 fuse)
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0057



HO2S-22 (Bank 2 Sensor 2) Heater Low Side Short Circuit

Possible Causes:



HO2S heater low side control circuit is shorted to ground
 
HO2S heater low side circuit is shorted to the signal circuit
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0058



HO2S-22 (Bank 2 Sensor 2) Heater Low Side Short To B+

Possible Causes:



HO2S heater low side control circuit is shorted to system power
 
HO2S heater is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0101



MAF Sensor Signal Range/Performance

Possible Causes:



Base engine vacuum leak, PCV valve leaking or stuck open
 
Engine oil dipstick missing or not fully seated
 
MAF sensor element (wire) is contaminated or dirty
 
MAF sensor signal or ground circuit fault or sensor has failed
 
PCM has failed
 

Trouble Code: P0102



MAF Sensor Circuit Low Input

Possible Causes:



MAF sensor element hot wire contaminated or the sensor failed
 
MAF sensor signal shorted to ground or ground circuit problem
 
MAF sensor wiring routed close to the ignition wires or motors
 
PCM has failed
 

Trouble Code: P0103



MAF Sensor Circuit High Input

Possible Causes:



MAF sensor element hot wire contaminated or the sensor failed
 
MAF sensor signal circuit is open or shorted to system power
 
MAF sensor wiring routed close to the ignition wires, generator, solenoids or electric motors (this causes it to pick up EMI/RFI)
 
PCM has failed
 

Trouble Code: P0112



IAT Sensor Circuit Low Input

Possible Causes:



IAT sensor signal circuit is shorted to sensor or chassis ground
 
IAT sensor is damaged or has failed (it may be shorted)
 
PCM has failed
 

Trouble Code: P0113



IAT Sensor Circuit High Input

Possible Causes:



IAT sensor signal circuit is open between the sensor and PCM
 
IAT sensor signal circuit is shorted to VREF or system power
 
IAT sensor is damaged or has failed (it may be open)
 
PCM has failed
 

Trouble Code: P0116



ECT Sensor Signal Range/Performance

Possible Causes:



IAT sensor signal circuit is open between the sensor and PCM
 
IAT sensor signal circuit is shorted to VREF or system power
 
IAT sensor is damaged or has failed (it may be open)
 
PCM has failed
 

Trouble Code: P0117



ECT Sensor Circuit Low Input

Possible Causes:



ECT sensor connector is damaged or shorted
 
ECT sensor signal circuit shorted to sensor ground
 
ECT sensor is damaged or has failed (it may be shorted)
 
PCM has failed
 

Trouble Code: P0118



ECT Sensor Circuit High Input

Possible Causes:



ECT sensor connector is damaged, loose or open
 
ECT sensor signal circuit is open between the sensor and PCM
 
ECT sensor signal circuit is shorted to VREF
 
ECT sensor is damaged or has failed (it may be open)
 
PCM has failed
 

Trouble Code: P0121



TP Sensor 1-2 Correlation Error

Possible Causes:



TP sensor connector is damaged, open or shorted
 
TP Sensor low reference circuit is open or has high resistance
 
TP Sensor 1 signal is open, shorted to ground or to 5v VREF
 
TP Sensor 1 VREF circuit is open or shorted to ground
 
Throttle body assembly is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0122



TP Sensor 1 Circuit Low Input

Possible Causes:



APP2 Sensor 5v VREF circuit is shorted to ground
 
ECM power ground circuit is open (a high resistance condition)
 
TP Sensor low reference circuit is open or has high resistance
 
TP Sensor 1 signal is open, shorted to ground or low reference
 
TP Sensor 1 VREF circuit is open or shorted to ground or to B+
 
Throttle body assembly is damaged or it has failed
 

Trouble Code: P0123



TP Sensor 1 Circuit High Input

Possible Causes:



APP2 Sensor 5v VREF circuit is shorted to system power (B+)
 
ECM power ground circuit is open (a high resistance condition)
 
Throttle body assembly is damaged or it has failed
 
TP Sensor low reference circuit is open or has high resistance
 
TP Sensor 1 signal is shorted to 5v VREF, or to APP2 5v VREF
 
PCM has failed
 

Trouble Code: P0125



ECT Excessive Time To Enter Closed Loop

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
Coolant level is too low, or the coolant mixture is incorrect
 
ECT sensor signal circuit has a high resistance condition
 
ECT sensor is damaged or it has failed
 

Trouble Code: P0128



ECT Sensor Below Thermostat Regulating Temperature

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
Coolant level is too low, or the coolant mixture is incorrect
 
ECT sensor signal circuit has a high resistance condition
 
ECT sensor is damaged or it has failed
 

Trouble Code: P0130



HO2S-11 (Bank 1 Sensor 1) Circuit Closed Loop

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
EVAP system leaks or restrictions, charcoal canister problems
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0131



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

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Fuel system too lean (possible low fuel pressure, water in fuel)
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S is damaged (air hole plugged) or it is contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0132



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

Possible Causes:



Air leaks in the exhaust system, intake manifold, vacuum lines
 
Fuel system too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)
 
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
 
HO2S low reference circuit is open or shorted to power (B+)
 
PCM has failed
 

Trouble Code: P0133



HO2S-11 (Bank 1 Sensor 1) Slow Response

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Exhaust system is leaking or severely restricted
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is open, or the low reference circuit is open
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0134



HO2S-11 (Bank 1 Sensor 1) Insufficient Activity

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Exhaust system is leaking or severely restricted
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is open, or the low reference circuit is open
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0135



HO2S-11 (Bank 1 Sensor 1) Heater Circuit Malfunction

Possible Causes:



HO2S heater high side driver circuit has high resistance (open)
 
HO2S heater low side driver circuit has high resistance (open)
 
HO2S heater power circuit is open (test O2S fuse in fuse block)
 
HO2S heater element is damaged or has failed
 
PCM has failed
 

Trouble Code: P0136



HO2S-12 (Bank 1 Sensor 2) Circuit Closed Loop

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
EVAP system leaks or restrictions, charcoal canister problems
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0137



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

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Fuel system too lean (possible low fuel pressure, water in fuel)
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is shorted to sensor or chassis ground
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0138



HO2S-12 (Bank 1 Sensor 2) Insufficient Activity

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Exhaust system is leaking or severely restricted
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is open, or the low reference circuit is open
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0140



HO2S-12 (Bank 1 Sensor 2) Insufficient Activity

Possible Causes:



EVAP system leaks or restrictions, charcoal canister problems
 
Exhaust system is leaking or severely restricted
 
HO2S air reference hole plugged (check for dirt on the outside)
 
HO2S signal circuit is open, or the low reference circuit is open
 
HO2S is damaged or contaminated due to improper fuel usage
 
PCM has failed
 

Trouble Code: P0141



HO2S-12 (Bank 1 Sensor 2) Heater Circuit Malfunction

Possible Causes:



HO2S heater high side driver circuit has high resistance (open)
 
HO2S heater low side driver circuit has high resistance (open)
 
HO2S heater power circuit is open (test O2S fuse in fuse block)
 
HO2S heater element is damaged or has failed
 
PCM has failed
 

 
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