× 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
1996 Chevrolet C1500 Cheyenne 5.0L MIL Lamp on
Posted to GM Driveability on 5/16/2006 11 Replies

Students are working on a vehicle that failed an OBDII emission test. The P1406A Code sets consistently. Like an EEC IV Ford, the EGR position sensor reports open at idle. The EGR Valve has been replaced to no effect.

Key on engine off we show .88 volt (both...

11 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet C1500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet C1500 Cheyenne

VIN 1GCEC19MXT
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / Central Multipoint
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P1406EGR Valve Pintle Position Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1996 Chevrolet C1500 Cheyenne

VIN 1GCEC19MXT
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / Central Multipoint
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P1406EGR Valve Pintle Position Circuit Malfunction