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2018 HONDA CIVIC
1.5L I4 Turbo•FWD•CVT•gas•turbo
6 active safety recalls on this vehicle — view recalls
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Repairs403Labor503Torque3385Fluid7DTC1924Battery1Maintenance0Recalls6
P0250moderate severityPowertrain

Turbocharger/Supercharger Boost Control B Circuit High

on 2018 Honda Civic 1.5L I4 Turbo · FWD

What this code means

The PCM detected a high voltage or signal in the boost control 'B' circuit. This typically means a short to power or an open circuit.

Symptoms

  • Erratic boost control
  • Reduced engine power
  • Check engine light on

Common causes

  • Short to voltage in circuit
  • Faulty boost control solenoid
  • Corroded connector
  • Open circuit fault

Diagnostic steps

  1. Read stored codes
  2. Check circuit for short to power
  3. Inspect connectors and wiring
  4. Test and replace solenoid as needed
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Other Powertrain codes on this vehicle

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