Traditional gasoline car fault
Search fault code and browse forum case posts.
This page is designed for quick diagnosis on gasoline vehicles by combining code lookup with real discussion cases. Enter a fault code to filter related topics, then compare symptom context such as cold start behavior, acceleration load, fuel-trim deviation, ignition misfire pattern, and recent maintenance history. Many codes can be triggered by shared root causes, so use cross-checks from multiple posts before replacing sensors, coils, injectors, or catalytic components.
Lexus ES350 P2197, P0356, C1201 to P0051: How to Fix Check Engine Light and Permanent Code Erasure
Hello! I recently had my Lexus ES350 diagnosed with several trouble codes: P2197, P0356, and C1201. The mechanic replaced the engine coil, and after the service, all warning lig...
Lexus ES350 | C12012004 Ford F250 OBD2 Fault Codes P0153, P2197, and P2198 - What Do They Mean?
I'm considering purchasing a 2004 Ford F250 with 72,000 miles. The check engine light is on, and the vehicle has three OBD2 diagnostic codes: P0153, P2197, and P2198. I want to ...
04 Ford F250 | P01532005 Ford Freestar P0171 P2195 P2097: How to Diagnose and Fix Vacuum Leak Issues
I've checked the OBD-II codes for both fuel banks. I've already replaced the MAF sensor, PCV valve, and associated hose, but the codes P0171, P2195, and P2197 persist. What is t...
2005 Ford Freestar | P01712008 Ford F150 Idle Rough with P2195 and P2197 Codes - Fuel Pressure & EGR Fix
Hi everyone, I'm having a serious issue with my 2008 Ford F15-0. The engine idles very roughly and often stalls when it's running. Diagnostic codes P2195 and P2197 are consisten...
2008 F150 | P2195Engine Code P2197: Diagnosis and Solutions for Lean Condition in [Vehicle Model]
I'm experiencing engine code P2197 on my [Vehicle Model]. I've already replaced the O2 sensor (B2S1), checked all wiring connections, replaced the fuel filter (which was severel...
2197 | P21972003 Ford Escape P2195 P2197 P0172 P0174 P0-175 Idle Surge Fix - MAF Sensor Diagnosis
My 2003 Ford Escape 3.0L engine starts normally but begins to surge when idling, especially at stops. The vehicle has been diagnosed with the following OBD-II fault codes: P2195...
2003 Escape | P01722007 Pontiac G5 Multiple OBD2 Codes (P0030, P0036, P0053, P0054, P0102, P0443) - How to Diagnose and Fix?
I'm experiencing multiple OBD2 diagnostic trouble codes on my 2007 Pontiac G5: - P0030: HO2S Heater Control Circuit (Bank 1 Sensor 1) - P0036: HO2S Heater Control Circuit (Bank...
2007 Pontiac G5 | P21772004 Ford Escape P2197 Fault: Wet Spark Plugs, Gas in Oil, and Failed Catalyst Converters
I own a 2004 Ford Escape with a persistent issue involving two spark plugs that are dripping fuel. The vehicle is showing fault code P2197, and I've noticed gas in my engine oil...
2004 Ford Escape | P21972004 Ford F-150 No Start with P0171, P0174, P0356, P2195, P2197 - Fuel or Ignition Issue?
I have a 2004 Ford F-150 'New Edge' 5.4L 3-valve V8, automatic transmission, 4x4 SuperCrew with 112,000 miles. The truck has original spark plugs and was recently serviced with ...
04 F-150 | P01712003 Ford Expedition PO171 PO174 P2195 P2197 - Rough Idle and Check Engine Light
Yesterday my 2003 Ford Expedition's check engine light came on. The vehicle runs roughly and erratically at idle, as if it's struggling to find the correct idle speed. It perfor...
2003 Ford Expedition | P2195Practical workflow for fault-code troubleshooting
Start by confirming battery voltage and reading freeze-frame data, then inspect wiring and connectors before replacing parts. If the code returns after clearing, record the exact driving or idling condition when it reappears. Prefer case threads with complete repair feedback, because confirmed outcomes provide stronger guidance than one-time symptom descriptions. Following a step-by-step workflow reduces repeated repairs and lowers total diagnosis time.