Codes P20A2 and P202B-2 step in
Thread Starter
MBWorld Fanatic!
Joined: Sep 2006
Posts: 1,921
Likes: 173
From: Long Island New York
2003 SL55,2020 GTC ,2017 GTS sold ,2002 G500 Sold,2003 SL500 Sold,
Codes P20A2 and P202B-2 step in
P20A2 idle speed control implausible:
Check system for unmetered air
P202B-2idle speed control implausible
Short circuit to ground or open circuit
No obvious vacuum leaks,this is an 06 E55 175 lower pulley,PLM headers,EC tune,no cats ,stock TB and air intake set up, car runs perfect, was thinking maybe tune issue.
Check system for unmetered air
P202B-2idle speed control implausible
Short circuit to ground or open circuit
No obvious vacuum leaks,this is an 06 E55 175 lower pulley,PLM headers,EC tune,no cats ,stock TB and air intake set up, car runs perfect, was thinking maybe tune issue.
Last edited by cnterline; May 21, 2015 at 11:03 AM.
Senior Member
Joined: Dec 2014
Posts: 271
Likes: 4
From: Auckland, New Zealand
2004 E55 AMG
P20A2 idle speed control implausible:
Check system for unmetered air
P202B-2idle speed control implausible
Short circuit to ground or open circuit
No obvious vacuum leaks,this is an 06 E55 175 lower pulley,PLM headers,EC tune,no cats ,stock TB and air intake set up, car runs perfect, was thinking maybe tune issue.
Check system for unmetered air
P202B-2idle speed control implausible
Short circuit to ground or open circuit
No obvious vacuum leaks,this is an 06 E55 175 lower pulley,PLM headers,EC tune,no cats ,stock TB and air intake set up, car runs perfect, was thinking maybe tune issue.
Read my thread here to see if it helps or if your symptoms are the same
https://mbworld.org/forums/w211-amg/...dvice-e55.html
Out of Curiosity - Do you have the bonnet lining/bonnet vent underlining removed do you?
After some random MAP sensor errors (hidden until logged in SDS) I got a LOT of P202b-002 Idle Speed Control Implausible - Short circuit to ground or open circuit
P20A2 - Idle speed control Implausible
P202b-002 comes up every time even after clearing the codes
Swapped my "STOCK" throttle body out and it was all fixed.....no more errors no more drive-ability issues
Last edited by menace2sobriety; May 22, 2015 at 05:42 AM.
