2000 Porsche Boxster (986) F6-2.7L A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 607

P1128 - P1130

NOTE:

- Air leaks ahead of the oxygen sensors can lead to a fault in adaptation Check exhaust system for leaks.

- Contrary adaptation values in connection with misfiring point to incorrectly adjusted control times check control times and adjust if necessary.

- If the fuel tank reserve light is switched on, no fault is entered.

Diagnosis Procedure

1 Check signal from MAF sensor.

1. Connect special tool 9637.

2. Connect voltmeter to pin III/23 and ground.

Switch on the ignition.

Display: 0.9 to 1.1 V

Start engine.

Display: approx. 1.4 V

2 Check fuel pressure.