DTC Advanced Diagnostics: P2175 (1.5L Engine)
DTC P2175: Throttle Actuator Control System Low Air Flow Detected
General Description
When the throttle body blockage occurs, the air flow decreases compared to the normal condition at similar throttle position. From this characteristic, the powertrain control module (PCM) assumes a blockage of the throttle body. If the throttle body blockage rate reaches 100 % of the predetermined threshold, a malfunction is detected and a DTC is stored.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 0.5 seconds or more |
| DTC Type | Two drive cycles, MIL on |
Enable Conditions
| Condition | |
|---|---|
| Other | At idle |
Malfunction Threshold
The throttle body blockage rate is 0.99 or more.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Throttle body blockage
- Air cleaner blocked
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.
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.