Re: P0134 & p0154
Originally Posted by
Ronman
On Friday I was just driving along and my check engine light came on. I read the codes with a code reader and both those codes came up.
P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0154 - O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
It seems very unusual to get both of those at the same time and even more unusual that both upstream 02 sensors would fail at the same time. Does anyone have any ideas or suggestions? The car has 107k miles and is a 2004.
This has come up before, and if I remember correctly those sensors are OK and another fault causes it.
Clear the codes and see if it comes back.
Go to the 2004 Repair Manual 9-162 and see possible causes, which are:
O2 SENSOR SIGNAL CIRCUIT OPEN
O2 SENSOR SIGNAL CIRCUIT SHORT TO GROUND
O2 SENSOR GROUND CIRCUIT OPEN
ENGINE EXHAUST LEAK
O2 SENSOR
POWER TRAIN CONTROL MODULE
Last edited by onehundred80; Nov 19, 2012 at 10:55 AM.