P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased fuel efficiency Black exhaust smoke indicating rich fuel mixture Check Engine Light (CEL) illuminated on the dashboard

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased engine performance Black or dark exhaust smoke Decreased fuel efficiency Illuminated Check Engine Light (CEL) Tools Needed:

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased fuel efficiency Black exhaust smoke from the tailpipe Check Engine Light (CEL) illumination with code P0172 Tools

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased fuel efficiency Black exhaust smoke from the tailpipe Illuminated Check Engine Light (CEL) with P0172 code Tools

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle Black exhaust smoke Decreased fuel efficiency Tools Needed: DiagtPro X400 Scanner Multimeter Vacuum gauge Step 1: Test Fuel Trim

P0172 Code? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle Black exhaust Decreased fuel efficiency Illuminated "Check Engine" light Tools Needed: DiagtPro X400 Scanner (for accurate live data and code

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle Black exhaust smoke Decreased fuel efficiency Tools Needed: DiagtPro X400 Scanner Multimeter Smoke test kit Step 1: Measure Fuel

P0172 Code? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased fuel efficiency Black smoke from the exhaust Engine light on with P0172 code (Bank 1 Too Rich) Tools

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle Black exhaust smoke Decreased fuel efficiency Tools Needed: DiagtPro X400 Scanner Multimeter Vacuum gauge Step 1: Test Fuel Trim

P0172 Code Fix? Here’s the Exact Fix (Step-by-Step) Symptoms: Rough idle and decreased fuel efficiency Black exhaust smoke and a strong fuel smell Illuminated "Check Engine" light on the dashboard