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2021 MAZDA MAZDA3

2.5L I4FWDAUTOMATICgas
1 active safety recall on this vehicle — view recalls
Repairs0Labor473Torque3657Fluid6DTC919Battery0Maintenance0Recalls1
P0017critical severityPowertrain

Crankshaft Position/Camshaft Position Correlation Bank 1 Sensor B

on 2021 Mazda Mazda3 2.5L I4 · FWD

What this code means

The crankshaft and Bank 1 exhaust camshaft position signals do not correlate properly.

Symptoms

  • Check Engine Light
  • Rough running
  • Engine noise
  • No start condition

Common causes

  • Timing chain issue
  • Exhaust VVT solenoid failure
  • Sensor failure
  • Worn timing components

Diagnostic steps

  1. Check timing chain alignment
  2. Test exhaust VVT solenoid
  3. Inspect sensors
  4. Check oil condition

Repair notes

Repair timing system or VVT components.

Other Powertrain codes on this vehicle

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