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derass · 04-29-2018, 08:32 PM

Ah. Just did some Google-ing about "AEM wideband offline". It appears that only applies to the Failsafe model. So that must be the version you have. The standard wideband doesn't have that function.

Did a quick skim through the Failsafe manual and couldn't find anything about the offline message.

So maybe check Google, as I saw a bunch of other threads discussing the same error. Seems to be a common problem. Or maybe someone else here can chime in.

The older AEM widebands have 2 connections between the sensor and gauge: one under the car, and one that plugs into the gauge itself. You can check those connections, and inspect the wiring for any breaks (like rubbing through the insulation) between the sensor and gauge.

04-29-2018, 08:32 PM	#5
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 37 Posts: 1,182 Trader Rating: (0)	Ah. Just did some Google-ing about "AEM wideband offline". It appears that only applies to the Failsafe model. So that must be the version you have. The standard wideband doesn't have that function. Did a quick skim through the Failsafe manual and couldn't find anything about the offline message. So maybe check Google, as I saw a bunch of other threads discussing the same error. Seems to be a common problem. Or maybe someone else here can chime in. The older AEM widebands have 2 connections between the sensor and gauge: one under the car, and one that plugs into the gauge itself. You can check those connections, and inspect the wiring for any breaks (like rubbing through the insulation) between the sensor and gauge.