OBD-II Code
P0535
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$80–$350
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P0535 sets when the ECU detects a generic circuit fault on the A/C evaporator temperature sensor - the sensor that monitors evaporator coil temperature to prevent icing during long A/C operation.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP0535 sets when the ECU detects a generic circuit fault on the A/C evaporator temperature sensor - the sensor that monitors evaporator coil temperatu…
P0535 sets when the ECU detects a generic circuit fault on the A/C evaporator temperature sensor - the sensor that monitors evaporator coil temperature to prevent icing during long A/C operation. The ECU/HVAC module uses this signal to cycle the A/C compressor off before the evaporator drops below freezing and ices up.
Cheapest-first ladder
- Locate the sensor - typically inserted into the evaporator core inside the HVAC housing behind the dash, with a connector accessible from inside the passenger footwell area.
- DMM the sensor resistance and compare to ambient temp - typical NTC thermistor behavior, 10k ohms near 25C dropping as temp rises.
- Inspect the connector for moisture - HVAC evap sensors live in a high-condensation environment and corroded pins are common.
- Scope the signal with the engine and A/C running, watching for the sensor to track evaporator temperature as the system cycles. Expensive-misdiagnosis trap: replacing the HVAC control module when a $30 evaporator temp sensor was the actual fault.
Vehicle-specific patterns2003-2010 Chrysler 300 / Dodge Charger / Magnum throws P0535 from corroded evap-temp sensor connectors.
- 2003-2010Chrysler 300 / Dodge Charger / Magnum throws P0535 from corroded evap-temp sensor connectors.
- 2007-2014GM full-size trucks (Silverado, Tahoe, Yukon) throw P0535 from a failed evap thermistor with poor service-time accessibility.
- 2008-2013Honda Accord / Pilot throws P0535 from connector moisture intrusion.
- 2010-2016Ford F-150 / Edge / Explorer throws P0535 from a known evaporator sensor failure pattern on the Ford-supplied component.
Estimated repair$80 to $350
Look up another code
More free tools