P CODES (POWERTRAIN) P0400 - P0499 P0402 Questions

I Clean The Egr Valve For My Ford Expedition 3 Times And I Still Get The Code P0402 Intermittently. What Can I Do To Solve The Problem?...

I Have The P0402 Code. I Understand It's An Egr System Problem. I Tested The Egr Valve, Using Vacuum To The Valve And The Engine Dies. It...

When The Car Is First Started After Sitting Overnight, The Idle Is Rough With A "chug" To The Engine. If I Do Not Wait Until The Idle...

Hi ....keep Getting A P0402 Code Even After Changing Egr Valve And All Sensors Regarding Egr Valve Including 02 Sensors(4) And Replacing Gas...

2002 Ford Crown Victoria Pi. Code P0402. Have Replaced Egr Valve, Dpfe And Evp. Checked Dpfe Hoses And Blew A Bit Of Air Through The Lines...

Diagnostic Detects P0402 Code. Which Egr Part Should Be Replaced?

My 1999 Silverado Is Showing Codes 0402 And P0402. My Manual Says It's The Catalyst Not Performing At Optimum Efficience Left Bank. I Can't...

Above Shown By Obd2 Scanner At Auto Part Store. Want To Verify That The Catalytic Converter Is Actually Clogged Up And Not Functioning.

My Check Engine Light Was On And Off Periodically After I Bought The Car In 2003 (mostly On). I Was Getting Code P0402 [exhaust Gas...

I Have A 1999 Toyota Solara V6, Check Engine Light Was On, Code Shows P0402 Egr Flow Excessive, I Had Reseted The Ecu, But Same Code Comes...