× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0402 Diagnostic Trouble Code Discussion for August 2009

EGRC-BPT Valve Function

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0402
Help Request Posted
2003 Lincoln Navigator 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 5LMFU28R73
P0402: Excessive EGR Flow Detected (ESM System). HI Y'ALL!! THis truck is a real headache!! Original complaint was misfire on accel! Found misfire events on mode 6 cyl #3 had about 1800 misfires in memory! OK replaced all spark plugs and cyl #3 coil! There were no codes at that time! Later found vacuum leak ...
August 09, 2009
2000 Ford Ranger XL 3.0L Excessive Emissions, Poor Idle Quality, Surge VIN: 1FTZR15V6Y
P0402: EGR excessive flow. This engine still has excessive valve noise and rough idle. Has anyone run into cracked blocks with these 3.0's? I believe there is still exhaust entering into the cooling system but I can't pick it up with a block test. I don't have an exhaust analyzer. Oil p...
August 12, 2009
1997 Mercury Cougar XR-7 4.6L MIL Lamp on VIN: 1MELM62W0V
P0402: . check engine light on po402. code set on 2 cold startup under 165"f .. warm up car ok no code. removed egr , tube,cleaned t bodey. inspected dpfe tubes clean.dpfe replaced. dpfe at 1.18 idle. egr stalls engine when opened manuley with vac. preform koeo pas...
August 19, 2009
2001 Ford F-150 XLT 5.4L MIL Lamp on VIN: 1FTRWO7L11
P0402: excessive egr flow detected. hey thank you in advance.came in with a p0402 found dpfe at fualt the only problem is this truck has gone through 3 dpfe's alreadly. once removed i can see it is filled with water i know water can be in the exhuast but i was wondering if anyone knew what would...
August 20, 2009