Can anyone tell me what the chaeck engine light P1145 is?

Can you look up CEL's on the PS2?

 

Primary 02 bank 1.

 

Thanks Stephen. Anything I shlould be concerned about with my stage 4? I knew you would know.

 

No. This is unrelated to the program.

 

DME 7.8 DME 7.8
0-122.7
P1145
Oxygen Sensor Ahead of TWC, Bank 1 – Above Limit
Diagnosis conditions
Note!
A lot of time is required (several days) until a fault is detected.
Possible fault cause
. Valve lift fault
. False air on the oxygen sensor after TWC
. Oxygen sensor
Affected terminals
-
Note!
. As this fault can be caused by a faulty flat-base tappet, a system
test for a small lift has to be performed initially. The fault can
occur sporadically; the test should therefore be performed at
least three times when the engine is at operating temperature.
. First indication of a valve lift fault can be provided by the adaptation
values at idle speed (RKAT) and in the lower part load (FRAU)
if they differ by more than 10 %.
Perform system test for small lift
Warning!
Test is carried out while driving. Have a second person operate
the Porsche System Tester 2.
During the system test for small lift, the valves remain at small lift,
regardless of the type of driving. Faulty switching conditions can be
detected by rough running, just like with misfire detection.
Several cylinders may be stored as faulty, although only one valve
on one cylinder is faulty.
In order to ensure that the fault is repaired, the flat-base tappets of
the inlet valves of the entire cylinder bank should be replaced if a
fault occurs.
2469 P1145 0-122.7 page 1
Printed in Germany – 6, 2002 p1145

DME 7.8 DME 7.8
A faulty flat-base tappet can be detected because the oxygen sen
sor
FR for this cylinder bank enriches the mixture (FR > 1) during
acceleration with wide-open throttle
see drawing below. Difference
from the other oxygen sensor > approx. 15 %. In the case of a
fault, the flat-base tappets of the inlet valves for the entire cylinder
bank must be replaced.
AB
A-Oxygen sensing, bank 1
B-Oxygen sensing, bank 2
1 -Select system test.
2 -Select "Request small lift".
If "Valve lift diagnosis not ready" appears, a fault may have
been stored.
1. Erase the fault memory.
3 -Activate the system test with the key
F8
immediately
before acceleration with wide-open throttle.
The message "Drive link active" then appears.
Note!
If "Request small lift" appears, the valves remain at small lift,
i.e. the performance is reduced dramatically.
2469 P1145
0-122.7 page 2
p1145 Printed in Germany – 6, 2002

DME 7.8 DME 7.8
4 -Perform acceleration with wide-open throttle in 2nd
gear, until "Valve lift diagnosis completed" (max. 4000
rpm) appears.
At speeds above 4000 rpm, misfires may be stored. Delete
the fault memory and repeat the test.
Note!
. If a fault is detected, it is only recorded in the fault memory after
6,000 ignitions (at idling speed approx. 3 minutes waiting time).
. It is important to observe the oxygen sensors during acceleration
with wide-open throttle or to record their behaviour with the
data logger.
Diagnosis/Troubleshooting
Note!
. Do not use contact spray on the connectors to oxygen sensor.
. If other faults (fuel supply) are stored in the memory, rectify these first.
Work instruction Display OK If not OK
1 Check exhaust system for
leaks
Repair exhaust system
. End
2 Replace oxygen sensor
Note!
Do not exchange oxygen sensors ahead of catalytic converter and
after catalytic converter.
2469 P1145 0-122.7 page 3
Printed in Germany – 6, 2002 p1145

DME 7.8 DME 7.8
Oxygen sensors ahead of and after catalytic converter
1 - Oxygen sensor ahead of catalytic converter
2 - Oxygen sensor after catalytic converter
12
2469 P1145
0-122.7 page 4
p1145 Printed in Germany – 6, 2002

 

I'll bet your O2 sensor is going bad. Mine did the same thing until the heater coil burned out! I have an extra one if you need it!

 

RMR

Wow, great information. Where did you get ?

The car is under warranty (I hope) so I don't think I need the sensor, yet.

 

OBD 2 manual on PDF