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2001-2004 CHEVROLET TRACKER
2.5L V6•RWD•gas•H25
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Repairs0Labor555Torque142Fluid8DTC1825Battery1Maintenance0Recalls0
P0153moderate severityPowertrain

O2 Sensor Circuit Slow Response Bank 2 Sensor 1

on 2001-2004 Chevrolet Tracker 2.5L V6 · RWD

What this code means

The upstream O2 sensor on Bank 2 is responding too slowly.

Symptoms

  • Check Engine Light
  • Poor fuel economy
  • Failed emissions

Common causes

  • Aging sensor
  • Contaminated sensor
  • Exhaust leak

Diagnostic steps

  1. Monitor switching rate
  2. Check for leaks
  3. Test response time

Repair notes

Replace O2 sensor.

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