P0222
DTC P0222
Circuit Description
The throttle position (TP) sensor 1 and sensor 2 are located within the throttle body assembly. Each sensor has the following circuits:
* A 5-volt reference
* A low reference
* A signal
This provides the powertrain control module (PCM) with a signal voltage proportional to throttle plate movement. TP sensor 1 signal voltage at closed throttle is near the 5-volt reference and decreases as the throttle plate is opened. TP sensor 2 signal voltage at closed throttle is near the low reference and increases as the throttle plate is opened. If the PCM detects that the TP sensor 2 signal voltage is less than the predicted range, DTC P0222 sets.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0222 Throttle Position (TP) Sensor 2 Circuit Low Voltage
Conditions for Running the DTC
* The ignition switch is in the crank or run position.
* DTC P0641 is not set.
* The ignition voltage is more than 5.23 volts.
* DTC P0222 runs continuously when the above conditions are met.
Conditions for Setting the DTC
The PCM detects that the TP sensor 2 voltage is less than 0.31 volts for more than 0.4 seconds.
Action Taken When the DTC Sets
* The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
* The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame and/or the Failure Records.
* The control module commands the TAC system to operate in the Reduced Engine Power mode.
* A message center or an indicator displays Reduced Engine Power.
* Under certain conditions the control module commands the engine OFF.
Conditions for Clearing the MIL/DTC
* The PCM will turn OFF the malfunction indicator lamp (MIL) during the third consecutive trip in which the diagnostic runs and passes.
* The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
* The DTC can be cleared by using a scan tool.
Test
