Traditional gasoline car fault

P0401 Diagnostic and Repair Guide for 1996 Toyota Camry LE with EGR System Issues

October 26, 19 Hi everyone, I own a 1996 Toyota Camry LE with a 4-cylinder engine (5SFE), automatic transmission. The check engine light has been on for over two years, and the ...

96 Camry LE | P0401

Check Engine Code P0401 on 2005 Chevrolet Blazer - Intake EGR Passage Diagnosis

I followed your advice and performed the EGR test. The engine did not stall, but it did run roughly and dipped in RPM slightly before stabilizing. I'm now unsure where to locate...

Chevy Blazer | P0401

check engine code PO401 Chevy Blazer

having codePO401 problems also on my 1998 chevy blazer 4.3l, v6, had egr valve replaced as code read stated, check engine light went off, stayed off for 4 days then came back on...

Chevy Blazer | P0401

2001 Toyota Camry P0401 Code: Causes and How to Pass Emissions Test

I own a 2001 Toyota Camry that is showing a confirmed P0401 fault code and a pending P0400 code. The check engine light remains on during idle, and when I accelerate to 3000 RPM...

2001 Toyota Camry | P0401

P0401 OBD2 Error on 2000 Mercury Grand Marquis: Causes, Diagnosis, and Fixes

The P040-1 diagnostic trouble code (DTC) indicates a malfunction in the Exhaust Gas Recirculation (EGR) system on your 2000 Mercury Grand Marquis. This issue is commonly caused ...

2000 Mercury Grand Marquis | P0401

1999 Ford V10 Triton RV with Persistent P0171, P0174 and New P0401 Code - Should I Be Concerned?

Hi everyone, I own a recreational vehicle (RV) powered by a 1999 Ford V10 Triton engine. For the past three years, I've been seeing diagnostic trouble codes P0171 and P0176 rela...

1999 Ford V10 RV | P0171

P0130, P0135, and P0401 Fault Codes on Skoda Fabia 1.4 (2000 Model) - Cold Start Issues with Engine Stalling and Fuel Smell

Hello, My Skoda Fabia 1.4 (2000 model) is showing three fault codes simultaneously: P0130, P0135, and P0400. These errors occur only during the first cold start of the day — wh...

Skoda Fabia 1.4 | P0130

P0401 and P0496 Codes: EGR Valve & Evaporative Emission System Fix for 2006 Chevy Uplander 3.5L

After replacing the EGR valve on my 2006 Chevrolet Uplander 3.5L, the P0401 code persisted despite multiple resets. I followed several repair videos that suggested cleaning the ...

2006 Chevy Uplander 3.5L | P0401

1999 Ford F-150 P0420, P0401, P0306 Codes: Cost-Effective Diagnosis and Repair Guide

Hello everyone! This is my son's first truck, and I recently pulled three OBD-II diagnostic codes: P0420, P0401, and P0306. While I understand what each code means, I'm looking ...

1999 f-150 | P0306

Chevy Matiz 800 P0404 and P0401 Error Codes: Diagnosis and Fixes

Hello everyone, I'm Emilio from Italy and I recently encountered a recurring issue with my Chevrolet Matiz 800. The check engine light turned on, and after taking the car to a m...

Chevy Matiz 800 | P0401

P0401 Code Repeated on 1996 Neon Highline - EGR System Diagnosis and Fixes

In the spring, my 1996 Neon Highline began experiencing catalytic converter pipe collapse. I replaced it with a Walker 15470 (part number 15473), and all exhaust components were...

1996 Neon Highline | P0401

2011 Ford Ranger 4.0L V6 P0401 Code After DPFE Replacement - Fix and Diagnosis

I own a 2011 Ford Ranger XLT 4x4 with a 4.0L V6 engine. Recently, I took it to the Ford dealership where they diagnosed and replaced my Diesel Particulate Filter EGR (DPFE) sens...

2011 Ford Ranger 4.0L V6 | P0401

97 Ford Expedition P0401 Code: Causes, Diagnosis, and Fixes for 5.4L V8 Engine

I recently connected an OBD2 scanner to my 1997 Ford Expedition Eddie Bauer Edition with a 5.4L V8 engine and received three identical diagnostic trouble codes: P0401. I've alre...

97 Ford Expedition | P0401

Ford 6.4 Diesel Error Codes P006B, P0401, and P2263: Causes and Troubleshooting Guide

Hi everyone, Has anyone experienced the error codes P006B, P0401, and P2263 on a Ford 6.4L diesel engine? I'm looking for reliable information on what these codes mean and wher...

Ford Diesel | P0401

2002 Honda Accord 3.0L V6 - Persistent P0401 and P0705/P0706 Codes After EGR Replacement and Intake Cleaning

I have a 2002 Honda Accord with a 3.0L V6 engine. I recently replaced the EGR valve, removed the intake manifold, and thoroughly cleaned all components twice. Despite these effo...

2002 Honda Accord | P0401

2005 Ford F350 6.0L Powerstroke: P0261, P0270, P0400 and No-Start Issues Explained

I recently purchased a 2005 Ford F350 with a 6.0L Powerstroke engine. The truck runs well when under load but exhibits a rough idle, almost like a misfire. The previous owner re...

2005 F350 | P0261

01 Monte Carlo 3.8L - P0401 EGR Flow Insufficient Diagnosis

Diagnosing P0401 (EGR Flow Insufficient) on a 2001 Monte Carlo 3.8L engine. I have already removed and cleaned the EGR tubes, verified wiring integrity, and replaced the EGR va...

01 Monte Carlo 3.8 | P0401

2004 Hyundai Sonata P0401 and P0421: Causes, Fixes, and Next Steps Before Inspection

I've been experiencing a persistent P0400 code on my 2004 Hyundai Sonata for over a year. Recently, the vehicle has developed a new issue — a P0421 code. I'm trying to understan...

04 Sonata | P0401

2003 Hyundai Santa Fe P0401 and P0421 Codes After Timing Belt Replacement at 250,000 Miles

I have a 2003 Hyundai Santa Fe with 250,000 miles and a 4-cylinder engine. Recently, I had the timing belt replaced at a dealership. After returning, I noticed increased engine ...

2003 Santa Fe | P0401

P0401 OBD2 Code on 2001 Chrysler Sebring 3.0L with 3.0L Engine - EGR System Diagnosis & TSB Reference

The P0401 diagnostic trouble code persists despite comprehensive testing of the EGR system. Key findings: 1) EGR solenoid resistance measured at 35.1 ohms — within acceptable r...

2001 Chrysler Sebring | P0401