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Discussion Starter · #1 ·
1999 Discovery 2, 159,000 miles.
Fresh top half engine rebuild. Less than 500 miles ago.
Disco Mike's stickies completed.

Codes P0134, P0135, P0155
Also shows fuel sys 1 OL Fault.

Replaced both front O2 sensors.

Immediately had the codes pop up again. Reset the codes and through a few cycles. After about 50 miles and 5 resets, they keep coming up.

Can somebody recommend a solution please?


Sent from App

Premium Member
16,594 Posts
Did you clean all the oil out of the connectors?
If you want, send me your number and I'll call yomorrow.
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