I just got myself a CRZ 2010 with 53000km Japanese import. Overall i loved the car. Yesterday i was driving back home and Engine light pops up, i got it checked from a mechanic and he has given me the P0420 code, and suggesting a cleaning of Catalytic converter. I went through few links on the internet and got myself acquainted with the error a bit.
I just realized from the last owner that he has never changed the spark plug, so is the spark plug can be the cause of it? or i should stick with the cat cleaning. Also when should i change the Spark plugs? i am little bit worried about my car, its kind of disappointment to get the engine light on 2nd day of your car [IMG class=inlineimg]/forum/images/CRZForum_2016/smilies/tango_face_plain.png[/IMG]
Also is there a way to change Language from Japanese to English?[IMG class=inlineimg]/forum/images/CRZForum_2016/smilies/tango_face_sad.png[/IMG]
Need some help guys
That's quite low mileage to have that problem, but it might be due to poor quality fuel also, so run a few tanks of top tier fuel.
Spark plugs should be good for 150,000 km or around 100,000 miles, if I converted the numbers correctly. I don't know what "cleaning of Catalytic converter" consists of, so have your mechanic explain that to you (and enlighten me.)
I think you're stuck with the language that's set on your JDM model, but I know there's a forum member who's good at translation--maybe he's still around to help translate some things, but I can't remember his username to call a mention for him.[IMG class=inlineimg]/forum/images/CRZForum_2016/smilies/tango_face_wink.png[/IMG]
So where did you import the car to?
strictly speaking, 100K miles is 160K km. With only 53000 km (33000 mi) on the car, a bad catalytic converter is unlikely, and the spark plugs are nowhere near due for replacement.
As far as a cleaning, it's possible to clean the O2 sensors pre- and post- converter, but I've never seen a successful catalytic converter cleaning procedure.
Litz is right that you should run some good clean gas through the car. Japan uses a much higher octane rating in premium gas and a much lower basic (adjusted for the different scales
For these scales, the US uses the AKI scale, and most of the rest of the world uses the RON scale) so your Japanese import would be tuned for 93 octane premium or 83 octane basic on the US scales.
Throw some premium or super gas in there depending on where you live and see if that code goes away.
I'm not sure about the language. I'm using google translate, so this Kanji is probably way off, but if you use the up/down arrows on your steering wheel until you see something like "設定を変更する" (chg setting) and hit the select/reset button. then your first option should be "ゲージ設定" (gauge settings) then your first option should be "言語を選択する" (select language)
Found someone on a toyota board who gave these kanji characters:
General consensus from various Toyota and Honda boards is that typically you're stuck with Japanese unless you siwap the dash though.