LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Porsche
>>
2004
>>
Cayenne S
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
System
>>
DME 7.1.1 Diagnosis (V8 & V8 Turbo)
>>
DTC P1553: Control Module Fault Group b Function Monitor - Signal Implausible
>>
Control Module Fault Group b Function Monitor - Signal Implausible
>>
Possible cause of fault
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible cause of fault
MAF sensor faulty or at fault detection threshold
DME control module faulty