Power reduced to 4k at track need help!!!

[mr.suntorytime]

Couldn’t connect the VEEPAK OND2 to my Bluetooth to collect data wirelessly.
Tried shutting down phone also. Any one else have an issue? 2 bars on my phone signal

ask someone for wired obd reader at the track. the event coordinators will help.

 

[MiamiBlue]

Did you have all the exhaust mods done at the same time by the same place? I would contact them in the first instance.

 

[Tracked Emira]

Fuse #15 under the carpet passenger i think.

Did you have all the exhaust mods done at the same time by the same place? I would contact them in the first instance.

Yes, they couldn’t clear the O2 sensor code .
They said drive it and come back.
The other code is new today that made car not rev past 4k

 

[Tracked Emira]

ask someone for wired obd reader at the track. the event coordinators will help.

We used an OBD2 reader and that’s how we found these codes

 

[Tracked Emira]

Opened fuse box and some fuses are not numbered??? Checking all fuses with a voltage tester now

 

[Tracked Emira]

The fuses were all good.
I guess I have to check the valve controller.
What have you guys done to clear the oxygen sensors. 1 comes on right away and the other oxygen sensor code when I drive. What is the fix to clear and make sure they don’t come back?

 

[Tracked Emira]

I got the VEEPAK connect to read what’s going on, But the o2 sensor output is flat there is no info coming out

 

[Blackthought_]

I got the VEEPAK connect to read what’s going on, But the o2 sensor output is flat there is no info coming out

Damn it sounds like they got fried. Due to the exhaust? I’d teach to Greg from GRP to see if he was any idea what might have gone wrong. Those o2 sensors are a pretty penny too

 

[gr1p]

Yeah Fried o2 sensors, replace

 

[GRP]

The o2 sensor code will not cause a limp mode like this.
Its something going on with the exhaust valve, either the valve motor itself or the controller.

 

[Jjrho]

i've had similar issues.... when i 'push' the emira a bit..esp. on hot days, it would go into limp mode....4k limited, etc.... but it would reset after the car cools off.... it's something to do with o2 sensor reading /ECU sensitivity.... quite annoying .... great japanese engine but shitty british electronics....... gonna take my car in for first dealer check...ecu etc upgrade if any...and see if it resolves.... i 've not had any code since last summer but .... i m pre sure it will come back if i take the car to the track and drive it the way it should be...
i also have 3rd cat delete, valve controller from milTek, etc etc and it's not due to that imo...

james R

 

[Tracked Emira]

I don’t think anything melted because nothing is near the exhaust. The 02 sensor issue was there before I tracked . It may be an installation issue with the spring not being used with exhaust, but I won’t know until next week when the diffuser comes out.
The dealer installed it so I hope they didn’t mess up.

 

[OppositeLock]

The fuses were all good.
I guess I have to check the valve controller.
What have you guys done to clear the oxygen sensors. 1 comes on right away and the other oxygen sensor code when I drive. What is the fix to clear and make sure they don’t come back?

The ECU expects a particular voltage range from the sensors. If it doesn't get this voltage, you get an immediate O2 error code. The code will tell you which sensor. The ECU also compares pre-cat/post-cat O2 readings against each other if sensor voltages are ok, that's how it tests catalyst function.

If you log the voltages, the pre-cat and post-cat O2 sensor readings should look like I describe in this post:

P0420 simple?

I've popped a P0420 code that has returned each day. I've read through many posts regarding trouble keeping the code away. I'm hoping I simply have a bad O2 sensor. QUESTION: Has anyone experienced the P0420 pop and simply changed the 02 sensor, ultimately fixing the problem?!?

www.lotustalk.com

Your code, P0158 means that the voltage is too high in sensor 2 bank 2. Sensor 2 is post-catalyst. I'm not sure whether bank1 is the front or rear one, though, as I've not worked on the Emira too much yet. High voltage is suspicious, because it shouldn't happen. The voltage in an O2 sensor comes from the chemical reaction with oxygen and should be between 0 and 1 volts for a narrow band sensor (which is what I think is in the Emira, but it's 0-5V roughly if it's wide band). Anyhow, your ECU is seeing more than max voltage. How can this happen? Maybe some insulation melted and the sensor heater wire is connected to sensor reading wire? Gotta give it a good inspection and log the voltages.