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P0402 Diagnostic Trouble Code Discussion for October 2008

EGRC-BPT Valve Function

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Trouble Ticket Help Requests for DTC P0402
Help Request Posted
2002 Nissan Frontier XE 2.4L MIL Lamp on VIN: 1N6DD26502
P0402: EGR control backpressure transducer malfunction. Truck came in with mil light on with P0402 and no drivability problems. Cleared codes and truck came back after about a week with light on again. Diagnosed EGR valve, EGR solenoid, and EGR temp. sensor to be working. I checked EGR passages and they are clear a...
October 01, 2008
2001 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: 3VWSP69MX1
P0402: egr system excessive flow. i have found that the egr excessive flow is direcly affected by my excessive maf values. although there is no maf codes, my idle reading is not at spec. block 003 in vag com is showing actual at 480 mg/stroke. spec is between 230 to 370. i verified this with a...
October 08, 2008