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P0690 Diagnostic Trouble Code Discussion for December 2010

Engine Controls Ignition Relay Feedback Circuit High

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Trouble Ticket Help Requests for DTC P0690
Help Request Posted
2008 Chevrolet Silverado 2500 HD LT 6.0L Fast idle VIN: 1GCHK23K18
P0690: Ign feedback cuircuit high. Vechicle is from a car lot , came in with ses light on , had codes,121,2270. Cleared them and 690, 2119, caame back . Cleaned throttle body, then has fast idle. We scoped the tps's (both) found seconary to have a bad gliych. Replaced throttle body with a new g...
December 02, 2010