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Old 07-06-2014, 03:49 AM   #1
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Strange CEL p 1671

I recently got a CEL and the code came back as 1671. Anybody ever dealt with this one? I looked it up and came up with two possibilities: ECU fault or engine compartment fan. There has been no change in the way the car runs.

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Old 07-06-2014, 08:33 AM   #2
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can you see if you can activate the engine compartment fan with your durametric? good way to test to see if it is working ..
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Old 07-06-2014, 01:55 PM   #3
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From the 7.8 DME Manual:
DME relay/control module faulty (computer monitoring: reset) – signal implausible

Possible fault cause
◆ Undervoltage
◆ DME relay faulty
◆ DME control module faulty
This fault may be entered if the control module has been operated with undervoltage.
Affected terminals
I/1 and I/8
• If no fault is present, erase the fault memory.
1) Check voltage supply, terminal 15
◆ Measure voltage between pin I/1 and ground.
> 11 V
2) Check DME relay ◆ Switch on the ignition
◆ Measure voltage between pin I/18 and ground
Battery positive voltage
Check triggering of DME relay
Replace DME relay
3) Replace DME control module.
4) Perform adaptation. ◆ Switch on the ignition
◆ Wait one minute
◆ Do not press the accelerator
◆ Switch off the ignition for at least 10 seconds
◆ Read out the fault memory
-> End -> End
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster bought new. Installed used motor at 89k.
1987 924S. 2002 996TT. PST2
Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...

Last edited by Paul; 07-06-2014 at 02:08 PM.
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Old 11-29-2014, 05:02 AM   #4
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Hi, a have this same problem with fault 1671 and my car is not interested to start Do you solved your problem?

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