Diagnostic Aids

When attempting to diagnose an intermittent problem, use scan tool to review malfunction history information. This data can be used to duplicate a problem.

Battery voltage is supplied to EGR valve terminal "E" when ignition is on. Check EGR fuse in underhood fuse/relay block before diagnosing this DTC. Carbon build-up around the EGR pintle nay restrict pintle movement. An open in the diode feedback circuit will result in unstable valve operation resulting in engine surge.