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2019 MAZDA MAZDA3

2.5L I4FWDAUTOMATICgas
6 active safety recalls on this vehicle — view recalls
Repairs0Labor479Torque3805Fluid6DTC919Battery0Maintenance0Recalls6
P0263high severityPowertrain

Cylinder 1 Contribution/Balance

on 2019 Mazda Mazda3 2.5L I4 · FWD

What this code means

Cylinder 1 is not contributing its expected share of power output.

Symptoms

  • Check Engine Light
  • Rough idle
  • Misfire
  • Vibration

Common causes

  • Low compression cylinder 1
  • Faulty injector
  • Valve issue
  • Head gasket leak

Diagnostic steps

  1. Run power balance test
  2. Check compression
  3. Test injector
  4. Inspect valves

Repair notes

Diagnose mechanical condition of cylinder 1.

Other Powertrain codes on this vehicle

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