Back to 2002 GMC Sonoma

2002 GMC SONOMA

2.2L I4FWDAUTOMATICgas
Repairs0Labor473Torque2471Fluid6DTC745Battery0Maintenance0Recalls0
P0152moderate severityPowertrain

O2 Sensor Circuit High Voltage Bank 2 Sensor 1

on 2002 GMC Sonoma 2.2L I4 · FWD

What this code means

The upstream O2 sensor voltage on Bank 2 is staying high.

Symptoms

  • Check Engine Light
  • Rich running Bank 2
  • Black smoke

Common causes

  • Faulty sensor
  • Leaking injector Bank 2
  • High fuel pressure

Diagnostic steps

  1. Monitor sensor voltage
  2. Check injectors
  3. Test fuel pressure

Repair notes

Replace sensor or fix rich condition.

Other Powertrain codes on this vehicle

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