Turbo/Supercharger Boost Pressure Sensor Circuit Intermittent
2007-2012 Mazda CX-7 2.5L I4
Description
The boost pressure sensor signal is intermittent, causing erratic boost control. The PCM detects signal dropouts or sudden voltage changes.
Symptoms
- Check Engine Light intermittent
- Fluctuating boost gauge
- Inconsistent power delivery
- Occasional limp mode
- Surging under load
Common Causes
- Loose boost pressure sensor connector
- Damaged sensor wiring
- Faulty boost pressure sensor
- Vibration-related intermittent contact
- Corroded sensor pins
Diagnostic Steps
- Monitor boost pressure PID for signal dropouts
- Wiggle test on sensor connector while monitoring data
- Inspect sensor connector pins for corrosion
- Check wiring harness routing near heat sources
- Swap sensor with known good unit if available
Repair Notes
Replace boost pressure sensor or repair intermittent wiring connection.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3003 on Other Vehicles
Common Questions
What does code P3003 mean on a 2007-2012 Mazda CX-7?
P3003 stands for "Turbo/Supercharger Boost Pressure Sensor Circuit Intermittent". The boost pressure sensor signal is intermittent, causing erratic boost control. The PCM detects signal dropouts or sudden voltage changes.
What are the symptoms of P3003 on a Mazda CX-7?
Common symptoms of P3003 include: Check Engine Light intermittent, Fluctuating boost gauge, Inconsistent power delivery, Occasional limp mode, Surging under load.
What causes P3003 on a 2007-2012 Mazda CX-7?
Common causes of P3003 include: Loose boost pressure sensor connector, Damaged sensor wiring, Faulty boost pressure sensor, Vibration-related intermittent contact, Corroded sensor pins.