CEL p1148

omg35s · 06-21-2011, 11:04 AM

Unfortunately, I am stuck with a Performance's Shop mistake.

Read More here : Vinny Ten Racing

They replaced my Stock cats with aftermarket performance ones and managed to break what I believe is the Air fuel ratio sensor 1.

From the service manual:

P1148, P1168 CLOSED LOOP CONTROL

P1148

Trouble diagnosis name
Closed loop control function (bank 1)

DTC detecting condition
The closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition.

Possible cause
Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
• A/F sensor 1
• A/F sensor 1 heater

Can someone chime in and tell me what this means? From the looks of it my Air fuel ratio sensor (bank 1) needs to replaced? Is this the Air fuel ratio sensor that is located on the passengers side header?

How easy is it to replace this sensor? Can I DIY?

Thanks

06-21-2011, 11:04 AM	#1 (permalink)
omg35s Base Member Join Date: Feb 2010 Location: New York Posts: 63 Drives: XXX Rep Power: 16	CEL p1148 Unfortunately, I am stuck with a Performance's Shop mistake. Read More here : Vinny Ten Racing They replaced my Stock cats with aftermarket performance ones and managed to break what I believe is the Air fuel ratio sensor 1. From the service manual: P1148, P1168 CLOSED LOOP CONTROL P1148 Trouble diagnosis name Closed loop control function (bank 1) DTC detecting condition The closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition. Possible cause Harness or connectors (The A/F sensor 1 circuit is open or shorted.) • A/F sensor 1 • A/F sensor 1 heater Can someone chime in and tell me what this means? From the looks of it my Air fuel ratio sensor (bank 1) needs to replaced? Is this the Air fuel ratio sensor that is located on the passengers side header? How easy is it to replace this sensor? Can I DIY? Thanks