Field Remedy: 2396
| Subject: |
Gasoline engines - MIL on and trouble
codes P0300 and P0301 or P0302, P0303, P0304 are stored |
| Models: |
Engines: |
Option: |
| Corsa-D 2007...,Astra-H 2004...,Vectra-C
2002... |
Gasoline Engines,Gasoline Engines,Gasoline
Engines |
only vehicles with GMLAN protocol |
| Complaint: |
Engine Misfire, MIL on and trouble codes
P0300 and P0301 or P0302, P0303, P0304 are stored. |
| Cause: |
Internal logic within the ECU recognizes an
irregular rotary motion. Misfire trouble codes P0300 – P0304
can be stored for a number of reasons and not only be attributed to
ignition related faults. Therefore, in the event of any engine
misfire trouble code, it is recommended that all failure records in
ECU are stored prior to deletion of any trouble codes. Please use
following Tech 2 steps to store failure records: - Select F0
Diagnostics - Choose MY and Vehicle - Select F1 Engine - Select
Engine version - Select F0 Diagnostic Trouble Codes - Select F2
Read failure Records, saved Trouble Codes will be shown - Store
data - Choose the saving location - Connect Tech 2 to computer -
Open TIS 2000 - Choose techline print - Download Tech 2 - Select
data from saved location - Save > > on hard disk This data
can be opened in txt format and forwarded. |
| Production: |
|
Remedy:
In case of customer complaint perform investigation as described in TIS
checking procedure and store failure record data as described above.
It is important to distinguish if misfire on all cylinders or one
cylinder.
Misfire on all cylinders:
• Appears only at low fuel level (nearly empty) few km/miles after
refilling with fuel: check for contamination / exchange fuel content.
• Appears only with full load (lean mixture ->
low lambda voltage value
in failure record data): check fuel pressure during this condition.
• Fuel contamination (Diesel, Ehanol, Water) in general will also cause
misfire on all cylinders.
Misfire only on one cylinder could be caused by:
• Injection valve
• Spark plug
• Insufficient compression
• Faulty ignition coil (defect ignition coil is always reproducible
under high load)
Detailed information are also available in checking procedure for
Opel/Vauxhall GT "DTC P0300-P0304"
| FunctionalGroup: |
L - Fuel- and Exhaust System |
| Complaint Group: |
06 - Failure Code Setting by Control
Unit |
| Trouble Code: |
P0300,P0301,P0302,P0303,P0304 |
|
