P0237 and P0420 codes
Thread Starter
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,305
Likes: 37
From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
P0237 and P0420 codes
I have a 2005 C230 with a M271 engine with Kleeman header installed.
I pulled the following codes with my new scanner:
P0237 Turbo/Super Boost Sensor A Circut Low Input
P0420 Catalyst Efficiency Below Threshold (Bank1)
I also retrieved the following engine info:
Fuel Sys1 occl, using H025
Fuel Sys2 occl, using H025
Coolant 194
ST FTRM1 -3.1%
LT TRRM1 1.5%
MAP 9.7 in/Hg
RPM 753
Ign Adv 4.5 ~ 5.0
IAT 145
MAF .250 lb/min
ABSLT TPS 1.9%
I just replaced both O2 sensors just a few weeks ago to try to rid the P0420code.
Any info or suggesting troubleshooting/fixes are appreciated!
I pulled the following codes with my new scanner:
P0237 Turbo/Super Boost Sensor A Circut Low Input
P0420 Catalyst Efficiency Below Threshold (Bank1)
I also retrieved the following engine info:
Fuel Sys1 occl, using H025
Fuel Sys2 occl, using H025
Coolant 194
ST FTRM1 -3.1%
LT TRRM1 1.5%
MAP 9.7 in/Hg
RPM 753
Ign Adv 4.5 ~ 5.0
IAT 145
MAF .250 lb/min
ABSLT TPS 1.9%
I just replaced both O2 sensors just a few weeks ago to try to rid the P0420code.
Any info or suggesting troubleshooting/fixes are appreciated!
MBWorld Fanatic!
Joined: Feb 2005
Posts: 5,761
Likes: 4
From: North Carolina
98 Black C43 , 12’ ML 350 Blutec
Thread Starter
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,305
Likes: 37
From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
If you actually read my post before responding, you would see that I know what the code is. My question is to fixing the problem, not what the code means....
