DTC Advanced Diagnostics: P0235 (1.5L Engine) (2025)
DTC P0235 : Turbocharger Boost Sensor Out of Range
General Description
The turbocharger boost sensor senses turbocharger boost pressure (vacuum) and converts it into electrical signals. The turbocharger boost sensor outputs low signal voltage at high-vacuum (throttle valve closed) and high signal voltage at low-vacuum (throttle valve wide open). If the signal voltage from the turbocharger boost sensor is a set value for a specified time, the powertrain control module (PCM) detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 6 seconds or more |
| DTC Type | Two drive cycles, MIL on |
Enable Conditions
| Condition | |
|---|---|
| Vehicle | ON mode |
Malfunction Threshold
The turbocharger boost sensor output voltage [TC Boost Pressure Sensor] is 0.75 V or less for at least 6 seconds.
[ ]: HDS Parameter
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.
- Turbocharger boost sensor internal circuit failure
- PCM internal circuit failure
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, the freeze data, and the on-board snapshot 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, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.