P3001moderate severityPowertrain
Turbo/Supercharger Boost Control Circuit Low
on 2020 Mazda Mazda3 2.0L I4 · AWD
What this code means
The signal from the turbo boost control solenoid circuit is below the expected threshold. This prevents proper boost pressure regulation.
Symptoms
- Check Engine Light
- Underboost condition
- Sluggish acceleration
- Limp mode activation
- Excessive turbo lag
Common causes
- Short to ground in boost solenoid circuit
- Faulty boost control solenoid
- Corroded wiring connector
- Failed turbo wastegate actuator
- Low system voltage
Diagnostic steps
- Measure voltage at boost control solenoid connector
- Inspect wiring for shorts to ground
- Test solenoid coil resistance
- Check wastegate actuator rod movement
- Verify battery voltage and PCM ground
Repair notes
Repair short circuit or replace boost control solenoid. Check wastegate linkage for binding.
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P0002
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P0003
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P0004
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P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1