Turbo/Supercharger Intercooler Temperature Sensor Circuit
2016-2021 Mazda CX-3 2.0L I4 🇨🇦
Description
The charge air cooler (intercooler) temperature sensor is reporting values outside the expected range. The PCM uses this data to optimize boost and timing.
Symptoms
- Check Engine Light
- Reduced power in hot conditions
- Excessive timing retard
- Poor performance on hot days
- Inconsistent boost levels
Common Causes
- Faulty intercooler temperature sensor
- Corroded sensor connector
- Damaged wiring
- Clogged intercooler fins
- Intercooler leak reducing cooling
Diagnostic Steps
- Read intercooler temp PID and compare to ambient
- Test sensor resistance vs temperature chart
- Inspect sensor connector for corrosion
- Check intercooler for external blockage
- Pressure test intercooler for leaks
Repair Notes
Replace intercooler temperature sensor. Clean intercooler fins if clogged. Repair any intercooler leaks found.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P3009 on Other Vehicles
Common Questions
What does code P3009 mean on a 2016-2021 Mazda CX-3?
P3009 stands for "Turbo/Supercharger Intercooler Temperature Sensor Circuit". The charge air cooler (intercooler) temperature sensor is reporting values outside the expected range. The PCM uses this data to optimize boost and timing.
What are the symptoms of P3009 on a Mazda CX-3?
Common symptoms of P3009 include: Check Engine Light, Reduced power in hot conditions, Excessive timing retard, Poor performance on hot days, Inconsistent boost levels.
What causes P3009 on a 2016-2021 Mazda CX-3?
Common causes of P3009 include: Faulty intercooler temperature sensor, Corroded sensor connector, Damaged wiring, Clogged intercooler fins, Intercooler leak reducing cooling.