2010 Cadillac CTS Sedan AWD V6-3.0L Page 1844
The TP sensors have opposite functionality. TP sensor 1 signal voltage decreases and TP sensor 2 signal voltage increases as the accelerator pedal
increases to wide open throttle (WOT).
Conditions for Running the DTC
P0121
* DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0335, or P0336 is not set.
* The engine speed is between 400-7,000 RPM.
* The engine coolant temperature (ECT) is between 69-127掳C (156-260掳F).
* The intake air temperature (IAT) is between -20 to +125掳C (-4 to +257掳F).
* The DTC runs continuously when the above conditions are met.
P0122, P0123, P0222, P0223
* DTC P06A3 is not set.
* The ignition is ON, or the engine is running.
* The engine is not operating in reduced power mode.
* The ignition voltage is greater than 6 V.
* The DTCs runs continuously when the above condition are met.
P2135
* DTCs P0121, P0122, P0123, P0222, P0223, or P06A3 are not set.
* The ignition is ON, or the engine is running.
* The engine is not operating in reduced power mode.
* The ignition voltage is greater than 6 V.
* The DTCs runs continuously when the above conditions are met.
Conditions for Setting the DTC
P0121
The ECM detects that the TP sensor 1 voltage is stuck in range for less than 1 s.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.3 V for less than 1 s.
P0123
The ECM detects that the TP sensor 1 voltage is greater than 4.8 V for less than 1 s.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.3 V for less than 1 s.
P0223
The ECM detects that the TP sensor 2 voltage is greater than 4.6 V for less than 1 s.
P2135
The ECM detects that TP sensor 1 and TP sensor 2 disagree greater than 7-10 percent for less than 1 s.
Action Taken When the DTC Sets
P0121
* DTC P0121 is a type B DTC.
* The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode.
P0122, P0123, P0222, P0223, or P2135
* DTC P0122, P0123, P0222, P0223, and P2135 are type A DTCs.
* The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode.
Conditions for Clearing the DTC
* DTC P0121 is a type B DTC.
* DTCs P0122, P0123, P0222, P0223 and P2135 is a type A DTC.
