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2001 Nissan Frontier 2.4L Engine P0400 Code: No/Reduced EGR Flow Diagnosis and Fixes
Recently purchased a 2001 Nissan Frontier with a 2.4L engine. The truck has been sitting idle for approximately two years, which may have contributed to some performance issues....
01 Frontier 2.4 | P0400OBD2 Fault Code P0735 in 2002 Chrysler Grand Voyager 3.3L V6 - Gear Shifting Issues and Speedometer Malfunction
Hi, I have a 2002 Chrysler Grand Voyager with a 3.3L V6 engine and an automatic transmission. The vehicle experiences sudden jerking during operation and sometimes fails to shif...
Chrysler E400 | P04002006 Honda Civic Hybrid P0401 Code: OBD2 EGR Test ID $D2 Below Minimum Specification
I own a 2006 Honda Civic Hybrid and am investigating a persistent P0401 diagnostic trouble code. During my OBD2 diagnostics, I discovered that the Onboard EGR test in Mode $06, ...
2006 Honda Civic | P04002001 Nissan Altima P0400 Code: How to Fix After Replacing EGV Valve
My 2001 Nissan Altima is showing a P0400 diagnostic trouble code, and even after replacing the EGR valve (EGV), the code persists. I need to pass smog inspection but the check e...
2001 Nissan Altima | P0400Mitsubishi Diamante 3.0 P0400 Fault: EGR Control Solenoid Valve Diagnosis and Testing
I'm currently experiencing a P0400 diagnostic trouble code on my Mitsubishi Diamante 3.0 engine. After testing the vacuum line and manifold EGR valve port, both appear to be fun...
Mitsubishi Diamante 3.0 | P04002000 Pontiac Sunfire P0300, P0400, P0507 Fault Codes: Engine Shakes, Oil Leak and Starting Issues
I own a 2000 Pontiac Sunfire with a 2.2L L4 OHV 8-valve engine. Whenever I shift into Drive, the vehicle shuts off unexpectedly. Now, when attempting to start it, the engine vio...
2000 Pontiac Sunfire | P03002004 Nissan Xterra V6 Fault Codes P0400, P0132, P0152, P0158, P0328, P0183, P0463 - Stall and High Fuel Consumption Diagnosis
Dear forum members, I'm seeking help with my 2004 Nissan Xterra V6. The vehicle frequently stalls or drags while driving and exhibits significantly increased fuel consumption. A...
2004 Nissan Xterra | P0132EGR Fault Code P0400 in 1997 Chevrolet Camaro LT1: Diagnosis and Solutions
I've been consistently receiving a P040-0 diagnostic trouble code on my 1997 Chevrolet Camaro LT1. I recently replaced the EGR valve, and the hose appears to be in good conditio...
1997 Chevy Camaro LT1 | P0400P0400 Error on Toyota Venza B1.6 1.6L 16 Valve Gasoline - Causes and Fixes
I'm experiencing a P0400 diagnostic trouble code on my Toyota Venza 1.6L 16-valve gasoline engine. I've tried clearing the code using an OBD2 scanner, but it returns after a sho...
Vectra B 1.6 16 valve benzina | P0400P0400 Fault Diagnosis and Low MPG on 1998 Mitsubishi Mirage - OBD2 Check Engine Light Still On
Hi everyone, I'm experiencing a persistent P0400 diagnostic trouble code on my 1998 Mitsubishi Mirage, which is also causing significantly reduced fuel efficiency. I've followed...
Mirage | P0400Vauxhall Zafira 2.0DTI P0400 Code: Exhaust Gas Flow Issue & EGR Valve Diagnosis
Hi, I own a Vauxhall Zafira 2.0DTI (52 plate) and recently received a diagnostic code P0400 — 'Exhaust Gas Insufficient Flow Detected' — along with P0400 'Exhaust Gas Recirculat...
Vauxhall | P0400P0400 Fault in 2001 Chevrolet Cavalier: Loss of Power and Starting Issues
My 2001 Chevrolet Cavalier with a 2.2L engine suddenly lost all power while driving, as if the engine had completely shut down. I was pressing the accelerator pedal hard when th...
2001 Cavalier | P04002005 Ford Focus P0106, P0400, P0452, P0191, and P0300 Codes - Diagnosis and Fixes
My 2005 Ford Focus is showing multiple OBD-II diagnostic trouble codes: P0106, P0400, P0452, P0191, and P0300. The vehicle runs smoothly under normal conditions, and I can clear...
2005 ford focus | P01061998 Mazda 1.5L After EGR Valve Cleaning: Now Shows P0400, P0120, and P0505 Codes
I have a 1998 Mazda 1.5L that previously showed a P0400 code due to restricted EGR flow. After cleaning the EGR valve and throttle body and reassembling, the vehicle now exhibit...
1998 Mazda 1.5L | P01201997 Ford Probe 4-Cylinder with Codes P0133, P1652, P0400, P1410, and P0171 - Troubleshooting Guide
My daughter's 1997 Ford Probe 4-cylinder vehicle is experiencing intermittent rough idle, stalling, and a lack of power during acceleration. After visiting AutoZone, we retrieve...
1997 Ford Probe | P0133PO400 Fault Diagnosis for 2000 Nissan Frontier 2.4L - EGR-Related Solutions
My hand-held Actron scanner is detecting code PO400 on my 2000 Nissan Frontier 2.4L, but it lists over ten potential fixes—ranging from vacuum line cleaning to EGR cleaning or P...
Nissan Frontier | P0400How to Test EGR Solenoid on 1999 Nissan Sentra Using OBDII via ELM327
Does anyone know the specific OBDII command needed to activate or deactivate the EGR solenoid on a 1999 Nissan Sentra? I'm currently using an ELMS327-based OBDII reader and am f...
nissan sentra | P0400P0400 Diagnostic and Fix for 2000 Jeep Cherokee 4.0L 6-Cylinder
The Check Engine Light is on with fault code P0400 in my 2000 Jeep Cherokee (6-cylinder, 4.0L engine, automatic transmission). I've attempted to reset the code multiple times, b...
Jeep Cherokee | P04001997 Buick Century 3.1L Engine Code P0400: EGR Flow Fault Diagnosis and Fix
My 1997 Buick Century with a 3.1L engine (95,000 miles) is throwing Diagnostic Trouble Code P0400, indicating an EGR flow issue. I've already replaced both the EGR valve and PVC...
Unknown | P04001997 Nissan Quest GXE with P0400 and P0325: Causes, Fixes, and Smog Check Implications
I own a 1997 Nissan Quest GXE with a 3.0L V6 engine and approximately 174,900 miles. Two weeks ago, my mechanic replaced the front exhaust manifold due to a crack and also repai...
1997 Nissan Quest GXE | P0325