Volvo Forums - Volvo Enthusiasts Forum

Volvo S40 The S40 is Volvo's most affordable sedan with all the amenities of a luxury sports car.

Cylinder 2 misfire detected and Catalyst Efficiency below threshold bank

Thread Tools
 
Search this Thread
 
  #1  
Old 11-05-2010 | 05:40 PM
cop30's Avatar
Thread Starter
|
Junior Member
Joined: Nov 2010
Posts: 1
Likes: 0
Default Cylinder 2 misfire detected and Catalyst Efficiency below threshold bank
I have a 2002 S40, I recently drove 1000 miles out of town (round trip), I recently noticed that once in a while the car seems to be missing. Check engine light did illuminate and the codes showed (P0303 Cylinder 2 misfire detected) and (P0420 Catalyst Efficiency below threshold bank) before I reset the light. Is this something simple to repair or major? Please help.
 
Reply Like
  #2  
Old 11-07-2010 | 08:27 AM
tech's Avatar
Administrator
Joined: Sep 2004
Posts: 36,349
Likes: 40
From: Orlando, Florida
Default
Check the spark plugs and coils and wires.
 
Reply Like
  #3  
Old 11-07-2010 | 06:50 PM
Hudini's Avatar
Senior Member
Joined: Oct 2007
Posts: 2,839
Likes: 16
From: Shanghai, China
Default
I'd go so far as to suggest replacing them.
 
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Random Multiple Misfire, Fuel Trim System Too Lean, Cylinder 5 & 6 Misfire
divinedavis
Volvo S80
3
02-28-2016 07:33 PM
2002 S60 2.4T Help: "Cylinder 2 mis-fire detected" & "Turbo Overboost Condition".
winebrat
Volvo S60 & V60
2
10-16-2011 02:19 PM
2001: misfire 2,3 and lean bank 1 codes
balooga1
Volvo S40
2
09-29-2011 10:44 PM
Help????? Low Volts Bank 1/ Running Rich on Bank 1
Turbo Theaters
Volvo 850
7
09-25-2009 09:02 PM
Error: P0128 and P4022 "Main Cat Efficiency" and "Low Bank"
Platinum52
Volvo V70
2
04-17-2008 07:10 AM
Tags
Back to Subforum
Volvo S40
View Next Unread
Re-Calibrate Internal Temperature Controller




Advanced Search

All times are GMT -5. The time now is 11:20 PM.