What exactly does Type 4 Short to B+/above upper limit/rich mixture t

[cvhs18472]

I have gotten P codes 1124 and 1126 on my 98 base Boxster with Tip. When I looked up the fault codes I got a type four which stated "Type 4 Short to B+/above upper limit/rich mixture threshold" Any help in translating that to something that a fairly new owner can understand? Thanks

[Loren]

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

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

These codes mean that is too lean. That is, the DME can make the mixture rich enough to compensate for a lean condition.

Potential causes are:

- Intake air system leaking.

- Fuel pressure too low.

- Volume supply of fuel pump too low.

- Fuel injectors fouled.

[cvhs18472]

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

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

These codes mean that is too lean. That is, the DME can make the mixture rich enough to compensate for a lean condition.

Potential causes are:

- Intake air system leaking.

- Fuel pressure too low.

- Volume supply of fuel pump too low.

- Fuel injectors fouled.

Thanks