The following is pulled from the Factory Service Notes.
P0113 & P0153 are "slow response" from Bank 1 and Bank 2 - pre catalysts O2 sensors. Potential failure modes are:
1) Sensor Connector and wiring issues, corrosion, loose connection ... likelihood of issue on both banks unlikely as they don't share wiring.
2) Sensor contamination from fuel, engine oil, coolant, or improper use of RTV. ... more probable. as these causes could affect both.
Problem will not be a failed Catalyst, as these errors come from upstream of the Cat unit .. besides, BOE's "hi flow" Cat is the same type core as OEM (Magnaflow OEM long life replacement), just in a more streamlined housing.
Likelihood of O2 simultanious sensor failures, slime to none, except from external contamination.
As to BayAreaEvoea's code P0137 this is "Low voltage" Bank 1 post catalyst error.
Potential Failure modes:
1) fix any pre-cat code errors first
2) sensor wired shorted to GND
3) failed Catalyst
'17 Evora Sport 410 GP (No. 1 of 9) LMS alloy pan, BOE headers, SSC harness bar
'12 Evora S GP (No. 1 of 14) BOE Prototype S 430 **SOLD**
Last edited by Julian73; 04-13-2019 at 09:48 AM.