Checking engine light on

Viper1 · 06-19-2019, 06:15 PM

So I switched out the intakes to the K&N Typhoon and added a Gemini cat back exhaust The car ran great the few times I took it out then went to drive it and the check engine light comes on. Car goes into a limp mode? Brought it back disconnected the negative battery cable....good as new....drove it a few times and now it happened again! Except this time i took the negative cable off for only a few seconds and the car pulls like it should but the light is still on! Any thoughts? Maybe an O2 sensor?

BettyZ · 06-19-2019, 06:22 PM

Quote:

Originally Posted by Viper1

So I switched out the intakes to the K&N Typhoon and added a Gemini cat back exhaust The car ran great the few times I took it out then went to drive it and the check engine light comes on. Car goes into a limp mode? Brought it back disconnected the negative battery cable....good as new....drove it a few times and now it happened again! Except this time i took the negative cable off for only a few seconds and the car pulls like it should but the light is still on! Any thoughts? Maybe an O2 sensor?

Did you manually reset the ECU?

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Viper1 · 06-19-2019, 06:49 PM

Quote:

Originally Posted by BettyZ

Did you manually reset the ECU?

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No, I thought by taking the negative cable off the battery that did it? How do I reset it?

SouthArk370Z · 06-19-2019, 07:00 PM

Modern cars are very good at self-diagnosis. Get an OBD code reader. I suggest buying one but most auto parts stores will have loaners you can borrow. Some will even go out to the parking lot and read the DTC(s) for you.
Hook up the reader (connector is on bottom of dash, next to steering column).
After a few seconds the reader and the ECM will shake hands and you can read the DTC(s).
Google the code(s) or post them here.

Raidernation · 06-19-2019, 07:05 PM

How long did you leave the battery disconnected for? Try disconnecting the battery again and hit the brake pedal. What codes are you throwing? That might help you figure out where to start looking.

Viper1 · 06-19-2019, 07:49 PM

I only left it off for about 5 minutes. Not seeing any codes on the dash. Not sure I had to pump the brake as well. I'm thinking of just making an appointment at the local Nissan dealer?

SouthArk370Z · 06-19-2019, 07:56 PM

Quote:

Originally Posted by Viper1

... Not seeing any codes on the dash. ... I'm thinking of just making an appointment at the local Nissan dealer?

You won't see any codes on the dash - you need an OBD reader to see the codes.

If you will post the codes here, someone will probably be able to help. At this point, taking it to a dealer would be premature (and costly).

BettyZ · 06-19-2019, 07:57 PM

Quote:

Originally Posted by Viper1

I only left it off for about 5 minutes. Not seeing any codes on the dash. Not sure I had to pump the brake as well. I'm thinking of just making an appointment at the local Nissan dealer?

Google "370Z ecu reset" and "370Z idle relearn". I just saved you $200.

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Viper1 · 06-20-2019, 04:51 PM

Quote:

Originally Posted by BettyZ

Google "370Z ecu reset" and "370Z idle relearn". I just saved you $200.

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Thanks I'll give it a shot!

mishuko · 06-21-2019, 08:57 AM

Theres a way you can actually get the code without an obd reader but it's essentially morris code... then you need to translate the code to a table which will give you the actual code that you can use to start isolating the issue.

Or you can get an obd reader and not have to guess the counts.

SouthArk370Z · 06-21-2019, 09:38 AM

Quote:

Originally Posted by mishuko

... it's essentially morris code Morse code... ...

fixed

Chuck33079 · 06-21-2019, 10:35 AM

Quote:

Originally Posted by BettyZ

Google "370Z ecu reset" and "370Z idle relearn". I just saved you $200.

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Quote:

Originally Posted by Viper1

Thanks I'll give it a shot!

Get the code read before you just get in the habit of constantly resetting it. 99% chance it's something minor but theres no way to tell without the code. Spend $25 on amazon and buy yourself a cheap OBD code reader.

wanker · 06-21-2019, 02:01 PM

Quote:

Originally Posted by Chuck33079

Get the code read before you just get in the habit of constantly resetting it. 99% chance it's something minor but theres no way to tell without the code. Spend $25 on amazon and buy yourself a cheap OBD code reader.

Many autoparts stores will read your codes for free. Autozone and PepBoys are two that come to mind.

Chuck33079 · 06-21-2019, 05:46 PM

Quote:

Originally Posted by wanker

Many autoparts stores will read your codes for free. Autozone and PepBoys are two that come to mind.

Yeah, but a cheap universal one is a good thing to own if you’re into cars at all.

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BettyZ · 06-21-2019, 05:57 PM

Quote:

Originally Posted by Chuck33079

Yeah, but a cheap universal one is a good thing to own if you’re into cars at all.

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Or into not having to drive to Vatozone every time you throw a code.

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06-19-2019, 06:15 PM	#1 (permalink)
Viper1 Base Member Join Date: May 2019 Location: WI Posts: 32 Drives: 2013 Sport/Tour Rep Power: 5	Checking engine light on So I switched out the intakes to the K&N Typhoon and added a Gemini cat back exhaust The car ran great the few times I took it out then went to drive it and the check engine light comes on. Car goes into a limp mode? Brought it back disconnected the negative battery cable....good as new....drove it a few times and now it happened again! Except this time i took the negative cable off for only a few seconds and the car pulls like it should but the light is still on! Any thoughts? Maybe an O2 sensor?

06-19-2019, 07:00 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	Modern cars are very good at self-diagnosis. Get an OBD code reader. I suggest buying one but most auto parts stores will have loaners you can borrow. Some will even go out to the parking lot and read the DTC(s) for you. Hook up the reader (connector is on bottom of dash, next to steering column). After a few seconds the reader and the ECM will shake hands and you can read the DTC(s). Google the code(s) or post them here. Chuck33079 likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

06-19-2019, 07:05 PM	#5 (permalink)
Raidernation Base Member Join Date: May 2016 Location: San Jose, Ca Posts: 174 Drives: 2016 GM Base 7AT Rep Power: 8	How long did you leave the battery disconnected for? Try disconnecting the battery again and hit the brake pedal. What codes are you throwing? That might help you figure out where to start looking. __________________ 2016 7AT GM Base: Fast Intentions CBE 18" Res, Z1 Rear Diff Cover, Quaife LSD, Nismo S-Sport Suspension, Nismo Body Brace Kit, White Line Front Sway Bar, SPL Front End Links, Energy Rear Bushing, Z1 Post MAF Silicone Tubes w/ K&N Drop-in Filters

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06-19-2019, 07:49 PM	#6 (permalink)
Viper1 Base Member Join Date: May 2019 Location: WI Posts: 32 Drives: 2013 Sport/Tour Rep Power: 5	I only left it off for about 5 minutes. Not seeing any codes on the dash. Not sure I had to pump the brake as well. I'm thinking of just making an appointment at the local Nissan dealer?

06-21-2019, 08:57 AM	#10 (permalink)
mishuko A True Z Fanatic Join Date: Jul 2014 Location: bouncin on tigga Posts: 8,062 Drives: '12 Z Rep Power: 9434	Theres a way you can actually get the code without an obd reader but it's essentially morris code... then you need to translate the code to a table which will give you the actual code that you can use to start isolating the issue. Or you can get an obd reader and not have to guess the counts.