Aem wideband offline help!!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

HanzdeFuko · 04-29-2018, 11:00 AM

Hey members, I have a question maybe I can get some help, I have a aem wideband on a 240sx and I notice when I get on it it will turn off, reads sensor offline, what do I check to fix this issue , I don't really know about wiring just the basics, had a shop install it but the shop is like 5 he away, rather fix it myself. Any advice would be nice.

derass · 04-29-2018, 02:49 PM

What do you mean "reads sensor offline"?

You said "it will turn off". So I assume the gauge looses power and you can't see anything.

The gauge only has 2 wires: switched +12V, and ground. I would check those two wires for a bad connection.

HanzdeFuko · 04-29-2018, 07:23 PM

Sorry it reads offline , so idk if its the power or ground I would check

HanzdeFuko · 04-29-2018, 07:23 PM

Like in the display it says sensor offline !!

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, 11:00 AM	#1
HanzdeFuko Leaky Injector Join Date: Aug 2010 Location: seaside Posts: 72 Trader Rating: (0) Feedback Score: 0 reviews	Aem wideband offline help!!!! Hey members, I have a question maybe I can get some help, I have a aem wideband on a 240sx and I notice when I get on it it will turn off, reads sensor offline, what do I check to fix this issue , I don't really know about wiring just the basics, had a shop install it but the shop is like 5 he away, rather fix it myself. Any advice would be nice.

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04-29-2018, 02:49 PM	#2
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 37 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	What do you mean "reads sensor offline"? You said "it will turn off". So I assume the gauge looses power and you can't see anything. The gauge only has 2 wires: switched +12V, and ground. I would check those two wires for a bad connection.

04-29-2018, 07:23 PM	#3
HanzdeFuko Leaky Injector Join Date: Aug 2010 Location: seaside Posts: 72 Trader Rating: (0) Feedback Score: 0 reviews	Sorry it reads offline , so idk if its the power or ground I would check

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) Feedback Score: 0 reviews	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.