Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1999CARAVAN BASE, 2.4 BREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODESSELF-DIAGNOSTIC TESTSDTC P0171 & DTC P0172: 1/1 FUEL SYSTEM LEAN/RICH
1999 Dodge and Ram Caravan Base, 2.4 B
DTC P0171 & DTC P0172: 1/1 Fuel System Lean/Rich
1999 Dodge and Ram Caravan Base, 2.4 BSECTION DTC P0171 & DTC P0172: 1/1 Fuel System Lean/Rich
NOTE:
DTC P0171 indicates 1/1 fuel system lean and DTC P0172 indicates 1/1 fuel system rich.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.