Traditional gasoline car fault

2006 GMC Yukon with P0172 P0175

Here is the history: 2006 GMC Yukon 5.3L Code Z for flex fuel. Approx 107000 miles on the clock. I first had an evap issue P0449. I wound up having to replace the purge valve ...

2006 GMC Yukon | P0172

2007 Chevrolet Silverado 1500 Classic P0101 P0172 P0175 P2A01 - Codes Only Appear at Highway Speeds

My 2007 Chevrolet Silverado 1500 Classic has been driven approximately 62,000 miles. The vehicle triggers fault codes P0101, P0172, and P0175, P2A01 only when driving at highway...

2007 chev Silverado 1500 classic | P0101

P0172 and P0175 Fuel Rich Codes on 2003 Ford Explorer 4.0L Flex-Engine - Diagnosis & Fix

I own a 2003 Ford Explorer with a 4.0L flex engine that is showing both P0172 and P0175 codes, indicating rich fuel conditions in Bank 1 and Bank 2. The vehicle has approximatel...

Ford Explorer | P0172

2003 Honda Pilot Downstream O2 Sensor Flatline at 2500 RPM - No Fault Codes, Normal Fuel Trim

I'm monitoring both the upstream and downstream oxygen sensors in my 2003 Honda Pilot using Autotap scanning software. The upstream sensor behaves as expected—rapidly switching ...

Unknown | P0171

96 Pontiac Sunfire OBD2 Code P0172: Fuel Trim System Rich - Causes and Solutions

I'm having a fuel trim system rich issue on my 1996 Pontiac Sunfire, showing OBD2 diagnostic code P0172. I need help identifying the possible causes. This problem is preventing ...

96 Pontiac Sunfire | P0172

2011 Ford F150 EcoBoost 4x4 XLT P0111, P0172, P0176 - What Does This Mean and Can I Fix It Myself?

My 2011 Ford F15

2011 F150 ecoboost | P0111

2000 Chevrolet S10 P0171 & P0172: Rich and Lean Codes Explained - Fuel, MAF, or Sensor Issues?

2000 Chevrolet S10 LS Extended Cab Pickup, 3-Door, 2.2L 2190CC Naturally Aspirated Engine (134 cu.in., Flex OHV). Currently at 121,000 miles. The vehicle has started exhibiting...

2000 chevrolet s10 | P0171

1997 Jetta GL 5-Speed: P0411 Secondary Air Injection System Flow Fault Diagnosis

I have a 1997 Jetta GL with a 5-speed manual transmission and a 2.0L engine. The Check Engine Light (CEL) came on with fault code P0411, indicating an incorrect flow in the seco...

97 Jetta | P0171

1997 Ford Taurus 3.0L OHC V6 Misfire with P0172 Code - Fuel Trim Issues and Engine Performance

I've been troubleshooting a persistent misfire issue on my 1997 Ford Taurus 3.0L OHC V6 for months. The vehicle now shows a P0172 code, indicating a rich fuel condition in Bank ...

1997 Ford Taurus | P0172

Audi A4 3.2L with P0172 and P0175 Codes: O2 Sensor or Fuel Pressure Regulator Fault?

Hello, I own a 2009 Audi A4 3.2L with persistent DTCs P0172 and P0175 indicating both Bank 1 and Bank 2 are running too rich. Previously, the vehicle had multiple misfire codes,...

Audi a4 3.2l | P0172

P0172 Diagnostic for 2009 Chevrolet Impala: O2 Sensor Replacement Not Clearing Check Engine Light

I'm experiencing a persistent check engine light on my 2009 Chevrolet Impala despite replacing both oxygen (O2) sensors. After installing the first sensor, the code cleared and ...

Chevy Impala | P0172

Ford Ranger 2002 V6 Idle Fluctuation with Multiple O2 Sensor and Emissions Codes (P1451, P0135, P0141, P0155, P1409, P1131)

My Ford Ranger 2002 V6 with 300,000 miles has suddenly developed an idle fluctuation issue, primarily occurring in the morning and sometimes when accelerating uphill. When the e...

Unknown | P0135

1999 Buick LeSabre P0172: Misfire, Hard Starting, and Stalling Issues - How to Diagnose and Fix

I own a 1999 Buick Lesabre that is experiencing severe starting difficulties. After cranking for an extended period, the engine starts but immediately misfires and often stalls ...

99 Buick LeSabre | P0172

2002 Ford F150 Check Engine Light Flashes On and Off with No Diagnostic Code

2002 Ford F15-0 Extended Cab, 4.5L V8 engine, 310,000 km. The 'Check Engine' light comes on intermittently, staying on for a week then going off, only to come back a week later....

2002 Ford F150 | P0171

2002 Ford F150 4.2L 6-Cylinder OBD2 Codes P0171, P0172, P0174 - Diagnosis and Solutions

A diagnostic scan revealed the following OBD2 trouble codes: P0171 (Rich mixture bank 1), P0172 (Rich mixture bank 2), and P0174 (Rich mixture bank 4) on a 2002 Ford F15-0 with ...

2002 ford f150 6 cylinder 4.2 | P0171

P0172 Fault Diagnosis for 1999 Saturn SL2: Running Rich, Engine Warm-Up Issues

I'm seeking help diagnosing a P0172 code on my 1999 Saturn SL2. The vehicle is running rich and the check engine light comes on after the engine reaches operating temperature. ...

99 Saturn SL2 | P0172

'03 Dodge Durango knocking with trouble code P0172

2003 Dodge Durango 4.7l V8 80k When I started the Durango today, there was a knocking noise (kinda sounds like a noisy valve) coming from the engine and I noticed a considerable...

03 Dodge Durango | P0172

2006 Honda Civic P0172 OBD2 Code: How to Fix Rich Fuel Mix in Bank 1

My 2006 Honda Civic Coupe is showing a P0172 diagnostic trouble code, which indicates that the fuel mixture in bank 1 is too rich—meaning there's too much fuel and not enough ai...

2006 Honda Civic | P0172

P0172 Code on 2005 Chevrolet Cavalier: Rich Mix, Hard Start, and Lack of Power - Diagnosis and Fixes

My 2005 Chevrolet Cavalier started showing a P0172 code (fuel system too rich on bank one) about two weeks ago. The car now has difficulty starting—only when the accelerator is ...

2005 Cavalier | P0172