Hey folks,

I recently purchased a 2019 GS which seems to be tuned, it had modified headers as well BUT I can see the original air filter. The car has a check engine light, and few codes that i believe they are related. On top of that I didn't see V4 mode activated so it might all be related. Here are the codes I am getting:

---------------------------P0011 [0x0011]Camshaft position (CMP), intake/left/front, bank 1 - timing over-advanced/system performance"A" Camshaft Position - Timing Over-Advanced or System PerformanceStatus: Confirmed
----------------------------P26C8 [0x26C8]Status: Confirmed
----------------------------P2535 [0x2535]Ignition switch, ON/start position - circuit highIgnition Switch Run/Start Position Circuit HighStatus: Confirmed
----------------------------P2534 [0x2534]Ignition switch, ON/start position - circuit lowIgnition Switch Run/Start Position Circuit LowStatus: Confirmed
----------------------------P0056 [0x0056]Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunctionHO2S Heater Control CircuitStatus: Pending
----------------------------P0057 [0x0057]Heated oxygen sensor (HO2S) 2, bank 2, heater control - heater circuit lowHO2S Heater Control Circuit LowStatus: Pending
----------------------------P0161 [0x0161]Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunctionO2 Sensor Heater CircuitStatus: Pending

 

Didn’t you post the same issue a few days ago ??….can’t have duplicates so do you want this one deleted ??…other post you said you have a 2019 ??…beyond the advice we have already given you that’s all we have for now….there is no silver bullet for any issue you may be having.

 

Thank you mate for your reply, I posted the other one in a wrong forum and I couldn't delete it. This post also has more details. Thanks for your help

 

Your other post is deleted and as I mentioned check your battery and engine oil…there is not going to be a 100% accurate diagnosis on this Forum unfortunately !!

 

All your codes point to the bank 2 and sensor 2 O2 heater.

I see only two possibilities, one easy the other not.

Bank 2 sensor 2, O2 sensor heater is malfunctioning. Check all of the wiring going to this this O2 sensor, measure this O2 sensors resistance at the PCM, O2 connector disconnected from the PCM of course. Check the connectors for damage of course.

Now you need a scanner.

A bad PCM.

 

hey folks,

so I was "luckly" be able to reach to the old owner, idenfitied the garage who did his window tent and I went their where they called him ))).

The car has the following modifications, BUT NOT AIR FILTER NEITHER A TUNE
- Upgraded headers
- Upgraded camshaft
- Upgraded downpipe
- Removed catalytic converter

I am afraid that I must tune the car, and install an air filter (the current one is the STOCK!!). What are your thoughts on Air filter and tune ?

 

Filter isn't a big deal. Tune is a necessity.

 

Should I:

- keep the current air filter and Tune
- change only the air filter (options are Attack Blue, BMS and K&N) And Tune
- Change air intake and Tune

I have been reading much about it, no bullet proof decision is there yet

 

with lth, cam and no cats... def need a tune

 

With those mods, you definitely need a tune.

 

how about the air filter? Do I have to go with full intake? Or upgraded filter is enough

 

Filter is enough. CAI's are just cosmetic in most cases.

 

thx mate

 

Folks,

do you really trust custom tune? Is there anu recommended tune i have to go with?

 

thank you, I would appreciate if you change the title to (Recommended Tune)

 

dyno tune would be the best, then they can tweak it to your specific car

 

indeed, but tweaking on dyno tune is then a custom tune. Isn't?

 

yes...a canned tune could work, but i personally wouldnt do it

 

After all the changes the previous owner did, I am afraid I am forced to do tunning? - Custom Headers- Camshaft - downpipe- removed catalytic converters

 

yes...