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Home >> Suzuki >> 2006 >> Aerio Premium, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0171 / P0172: System Too Lean / Rich >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION CHART

DTC detecting condition Trouble area
P0171: 
Total fuel trim is higher than 29% when canister purge control is not activated.
(2 driving cycle detection logic)
P0172: 
Total fuel trim is lower than -29% when canister purge control is not activated.
(2 driving cycle detection logic)
  • Vacuum leaks
  • Exhaust gas leakage
  • Fuel pressure out of specification
  • Fuel injector malfunction
  • Heated oxygen sensor-1 malfunction
  • MAF sensor malfunction
  • ECT sensor malfunction
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