Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes
Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts
0640
Misfiring of cylinder 5 : Worsening of exhaust emission values after engine start (P0305)
Possible cause:
- Combustion misfirings
Affected functions:
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 547
- Engine diagnosis
-------------------------------------------------
Test 1: Combustion misfirings
1. Combustion misfirings
Warning!Communication with ECU required.
722.9 (7-gear) ETC2 as of 2008
Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.
Possible cause:
- Y3/8n4 (Fully integrated transmission control (VGS) control unit)
Affected functions:
- Automatic transmission Function
-------------------------------------------------
Test 1: Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty
1. Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty
Test prerequisites
- First of all process all other current fault codes.
POSSIBLE CAUSES
- Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.
Preconditions
- Print out the initial quick test log before processing the fault code 0641.
- Create control unit log.
Important notes before commencing repair measures
- Always use the same diagnostic unit after the repair measure.
Continue with button F2
Sequence
- Data are being read from the old control unit.
Start process with button F2.
1. No further information available.
ME9.7
Misfiring of cylinder 4 : Damages TWC (P0304)
Possible cause:
- Combustion misfirings
Affected functions:
- Engine diagnosis
-------------------------------------------------
Test 1: Combustion misfirings
1. Combustion misfirings
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 548
Warning!Communication with ECU required.
ME9.7
Misfiring of cylinder 4 : Worsening of exhaust emission values (P0304)
Test 1: Combustion misfirings
Test 2: Possible cause:
- Combustion misfirings
Affected functions:
- Engine diagnosis
1. Combustion misfirings
Warning!Communication with ECU required.
2. No further information available.
722.9 (7-gear) ETC2 as of 2008
The voltage supply of the speed sensors is faulty. ( Undervoltage )
Possible cause:
- Local undervoltage of component Speed sensors
Affected functions:
- Automatic transmission Function
-------------------------------------------------
Test 1: Remedial action if faulty voltage supply to rpm sensors ( Undervoltage )
1. Remedial action if faulty voltage supply to rpm sensors ( Undervoltage )
Operation number of operation texts and work units or standard texts and flat rates:27-0641Cause
- The voltage supply of the speed sensors is faulty.(Undervoltage)
REMEDY
- Disassemble and assemble automatic transmission using the repair instructions.
- Exchange electrohydraulic control unit.
Notes on submitting warranty or goodwill claimsSEAG damage code (7 digits): 54553 73IMPORTANT NOTEFollowing the repair measures, the
following checks MUST be carried out using the Diagnosis Assistance System, menu 'Initial startup'
- Initial startup with manual settings input for new control unit
Continue with button "F2"
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 549
Warning!Communication with ECU required.
0640
Misfiring of cylinder 5 : Worsening of exhaust emission values after engine start (P0305)
Possible cause:
- Combustion misfirings
Affected functions:
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 547
- Engine diagnosis
-------------------------------------------------
Test 1: Combustion misfirings
1. Combustion misfirings
Warning!Communication with ECU required.
722.9 (7-gear) ETC2 as of 2008
Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.
Possible cause:
- Y3/8n4 (Fully integrated transmission control (VGS) control unit)
Affected functions:
- Automatic transmission Function
-------------------------------------------------
Test 1: Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty
1. Remedial action if component 'Y3/8n4 (Fully integrated transmission control (VGS) control unit)' is faulty
Test prerequisites
- First of all process all other current fault codes.
POSSIBLE CAUSES
- Component Y3/8n4 (Fully integrated transmission control (VGS) control unit) is defective.
Preconditions
- Print out the initial quick test log before processing the fault code 0641.
- Create control unit log.
Important notes before commencing repair measures
- Always use the same diagnostic unit after the repair measure.
Continue with button F2
Sequence
- Data are being read from the old control unit.
Start process with button F2.
1. No further information available.
ME9.7
Misfiring of cylinder 4 : Damages TWC (P0304)
Possible cause:
- Combustion misfirings
Affected functions:
- Engine diagnosis
-------------------------------------------------
Test 1: Combustion misfirings
1. Combustion misfirings
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 548
Warning!Communication with ECU required.
ME9.7
Misfiring of cylinder 4 : Worsening of exhaust emission values (P0304)
Test 1: Combustion misfirings
Test 2: Possible cause:
- Combustion misfirings
Affected functions:
- Engine diagnosis
1. Combustion misfirings
Warning!Communication with ECU required.
2. No further information available.
722.9 (7-gear) ETC2 as of 2008
The voltage supply of the speed sensors is faulty. ( Undervoltage )
Possible cause:
- Local undervoltage of component Speed sensors
Affected functions:
- Automatic transmission Function
-------------------------------------------------
Test 1: Remedial action if faulty voltage supply to rpm sensors ( Undervoltage )
1. Remedial action if faulty voltage supply to rpm sensors ( Undervoltage )
Operation number of operation texts and work units or standard texts and flat rates:27-0641Cause
- The voltage supply of the speed sensors is faulty.(Undervoltage)
REMEDY
- Disassemble and assemble automatic transmission using the repair instructions.
- Exchange electrohydraulic control unit.
Notes on submitting warranty or goodwill claimsSEAG damage code (7 digits): 54553 73IMPORTANT NOTEFollowing the repair measures, the
following checks MUST be carried out using the Diagnosis Assistance System, menu 'Initial startup'
- Initial startup with manual settings input for new control unit
Continue with button "F2"
Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Diagnostic Trouble Codes Page 549
Warning!Communication with ECU required.
