Subaru Enthusiasts Car Club of the Sierras - View Single Post - CEL Code PO546 No results In Search Box Here

cody · 2008-02-10, 03:52 PM

What's wrong: Either your UP cat is failing, your EGT probe is failing, or you are generating higher than typical EGT's due to another problem. None of these possiblities are particularly safe situations.

You said you removed all the parts. Does that include the UP? How's the cat look when you shine a flashlight at it? I'd imagine the sensor could be tested with an ohmmeter and a blow torch, but I'd bet it's the cat failing which might also explain why the car has been running poorly lately.

What I'd do: When upgrading the turbo, install a ceramic coated UP that doesn't have any bungs. Tuning will eliminate the CEL associated with removing the EGT sensor and it won't be necessary anyway, now that you have a catless UP. Consider installing an EGT probe in the headers for an aftermarket gauge.

Profit?

2008-02-10, 03:52 PM	#4
cody Candy Mountain Real Name: Cody Join Date: May 2005 Location: Californication Posts: 7,751 Car: 03 Pussy Wagon, now with more pink! Class: TESP OMG Internet!	What's wrong: Either your UP cat is failing, your EGT probe is failing, or you are generating higher than typical EGT's due to another problem. None of these possiblities are particularly safe situations. You said you removed all the parts. Does that include the UP? How's the cat look when you shine a flashlight at it? I'd imagine the sensor could be tested with an ohmmeter and a blow torch, but I'd bet it's the cat failing which might also explain why the car has been running poorly lately. What I'd do: When upgrading the turbo, install a ceramic coated UP that doesn't have any bungs. Tuning will eliminate the CEL associated with removing the EGT sensor and it won't be necessary anyway, now that you have a catless UP. Consider installing an EGT probe in the headers for an aftermarket gauge. Profit? __________________ Slow and low, that is the tempo. Last edited by cody; 2008-02-10 at 03:58 PM.