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P1602

cvhs18472
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cvhs18472 Member

cvhs18472

Posted
Posted (edited)

I have a 98 Boxster w/tip. I was having some problems with the secondary air injection and finally got it straightened out About a week and a half later and many cycles I am in the middle of a spirited run for the Watkins Glen Vintage grand Prix festival and the CEL comes on. Performance didn't seem to change. I get home after the weekend and get 3 fault codes that don't seem to make sense and of the 3 I can't seem to find the explanation for one. The codes were P1124 PFC 167 fuel pump relay final stage; P1126 PFC 356 O2 sensor adaptation and the weird one for these others is P1602 PFC 660 -Can-Instrument Cluster. My low gas light did come on when I was taking the car for gas a couple of days before we left for The Glen and I didn't drive it at all afterwars as the weather was nasty and I had just cleaned it. Anyone with ideas as to what is going on. Thanks,

Edited by cvhs18472
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Loren Member

Loren

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Posted

P1124 Oxygen Sensing Adaptation Area 1 (Cylinders 1 - 3) - Rich Threshold

P1126 Oxygen Sensing Adaptation Area 1 (Cylinders 4 - 6) - Rich Threshold

Possible causes:

- Intake air system leaking.

- Fuel pressure too low.

- Volume supply of fuel pump too low.

- Fuel injectors fouled.

- Dirty or bad MAF

P1602 Voltage Supply - Open Circuit

- Battery was disconnected.

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