Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 649
DME 7.8 DME 7.8 0 · 0-P0720P0720
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DME 7.8 DME 7.8 0
0-P0720P0720
Tiptronic (CAN: wheel speed rear right)
Diagnostic conditions
• Ignition on
Possible cause of fault
♦The Tiptronic control unit has detected a malfunction.
Note!
♦The fault is diagnosed in the Tiptronic control unit. OBDII relevant
fault codes are sent to the DME control module via the CAN
drive. In the process the Tiptronic fault codes are converted to
P-code!
♦Fault management and any activation of the Check Engine lamp
is done by the DME control module!
Affected terminals
-
Diagnosis/troubleshooting
Note!
♦The fault codes stored in the Tiptronic control unit for this P
code are to be taken from the following table.
♦For in-depth troubleshooting see Rep. Gr. 3701; Tiptronic
diagnosis in the On-Board Diagnosis Manual (OBD II), Tiptronic,
Boxster (986), 911 Carrera (996), 911 Turbo (996)
P code Fault code Fault text Fault effect
P0720 22 CAN: wheel speed rear right from PSM Substitute value wheel speed rear left;
implausible if more than one fault from Group 22,
23, 24, 25 appears, then control unit
is in limp-home mode
23 CAN: wheel speed rear left from PSM Substitute value wheel speed rear left;
implausible if more than one fault from Group 22,
23, 24, 25 appears, then control unit
is in limp-home mode
38 CAN: PSM communication disturbed Control unit in limp-home mode
2470 P0720 0-P0720 page 1
Printed in Germany – 14, 2003 p0720
This is a source reference. Confirm exact model applicability in the original material.
