DTC Advanced Diagnostics: P2101
DTC P2101:Electronic Throttle Control System (ETCS) Malfunction

General Description


The powertrain control module (PCM) monitors the throttle actuator for rationality malfunctions. In order to provide rationality check of control deviation and control duty cycle range check, the actual actuator position is continuously monitored against commanded value. If the checked values are abnormal, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
0.5 second or more
DTC Type
One drive cycle, MIL on

Enable Conditions
Condition
 
State of the engine
Running

Malfunction Threshold
The throttle position is in a certain range for at least 0.5 seconds.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
PCM internal failure

Confirmation Procedure
Operating Condition
Start the engine, and let it idle.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.