Code
P0453
Evaporative emissions
EVAP pressure sensor high input
The evaporative system pressure sensor reads too high.
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Most likely causes
- Faulty EVAP pressure sensor
- Pinched vent line
- Wiring fault
Symptoms you may notice
- Check engine light
Checks to run
- Test the sensor
- Inspect the vent line
- Check wiring
Tools you may need
Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.