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2017 CHEVROLET IMPALA

2.5L I4 EcotecAWDAUTOMATICgas
Repairs0Labor990Torque7715Fluid15DTC1938Battery2Maintenance0Recalls0
P2626moderate severityPowertrain

O2 Sensor Pumping Current Trim Circuit Open Bank 1 Sensor 1

on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD

What this code means

Open circuit in the wideband O2 sensor trim circuit on bank 1.

Symptoms

  • Check engine light
  • Poor fuel economy
  • Rough running

Common causes

  • Failed wideband O2 sensor
  • Wiring damage
  • ECM circuit fault

Diagnostic steps

  1. Check sensor connector
  2. Measure sensor heater and signal circuits
  3. Inspect wiring

Repair notes

Replace wideband O2 sensor. Verify wiring.

Other Powertrain codes on this vehicle

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