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2002 VOLVO S80
2.9L I6•AWD•AUTOMATIC•gas•B6294S
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1005Torque6617Fluid14DTC1718Battery2Maintenance0Recalls5
P0170moderate severityPowertrain

Fuel Trim Bank 1

on 2002 Volvo S80 2.9L I6 · AWD

What this code means

The fuel trim values for Bank 1 are outside the acceptable range, indicating a persistent lean or rich condition.

Symptoms

  • Check Engine Light
  • Poor fuel economy
  • Rough idle
  • Hesitation

Common causes

  • Vacuum leak
  • Faulty O2 sensor
  • Fuel pressure issue
  • MAF sensor problem
  • Exhaust leak

Diagnostic steps

  1. Check long-term fuel trim values
  2. Inspect for vacuum leaks
  3. Test fuel pressure
  4. Test MAF sensor
  5. Check for exhaust leaks

Repair notes

Diagnose and correct the underlying lean or rich condition.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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