Audi Q7 Quattro Technical 011248 Date: 120611
Emissions - IM Issues Due To Readiness Codes Not Set
01 TDI clean diesel I/M (Inspection Maintenance) testing issues due to readiness not set
01 12 48
2023297/2
June 11, 2012.
Superceded Technical Service Bulletin Group 01 number 10 - 06 dated May 07, 2010 for reasons listed below.
Affected Vehicles
Condition
^ DTCs were recently erased from the vehicles engine control module (ECM).
^ An Audi TDI clean diesel is not ready for I/M (Inspection Maintenance) testing due to readiness codes not being fully set.
Tip: This does not indicate any technical problems with the vehicle, only that more driving may be necessary to set full OBD readiness.
^ Certain environmental conditions and customer driver profiles may extend the drive time required to fully set readiness on TDI clean diesel
vehicles. Fully setting the DPF monitoring function requires a cycle of building soot and burning the soot off during a regeneration process.
Tip: If possible, advise customer not to service vehicle directly before I/M inspection. If the readiness bits are reset, this can create a condition
where extensive driving is required prior to setting full readiness.
Technical Background
Some readiness codes on Audi TDI clean diesel vehicles require special driving conditions to be set. If DTCs have been recently erased from the
vehicles ECM, it may take additional driving under different conditions to fully set OBD readiness parameters.
MVB 89 (on non-UDS protocol ECMs) will store correct data concerning OBD readiness.
Tip: Information on the readiness status on UDS protocol vehicles is available by reading the Mode 1 - Mode 10 data in the OBD section of the
scantool.
Audi Q7 Quattro 101
Audi Q7 Quattro 102
Interpreting OBD Readiness (MVB 89)
Quick Reference Table
Production Solution
Not applicable.
Service
1. To check the correct status of OBD readiness, refer to MVB 89 and the supplemental information in the Technical Background section
(applies to non-UDS protocol vehicles). For ECMs with UDS protocol, readiness status can be obtained by reading the Mode 1 - Mode 10
data within the OBD section of the scantool.
2. If any OBD system indicates incomplete monitoring ("1" shown in Byte 4) with no DTCs stored in the ECM, no repair is necessary.
Tip: There is no need to repair any vehicle system due to readiness not being set. Repair work is required only if there is a relevant DTC stored
within the ECM and the MIL is illuminated. Ignore pending DTCs.
Tip: Do not reset the ECM unless a DTC is saved in memory and the MIL is illuminated. Ignore pending DTCs. Resetting the ECM will erase the
readiness codes and additional driving will be required to set the eadiness codes.
Audi Q7 Quattro 103
3. The vehicle requires additional driving to complete the OBD readiness checks. Drive the vehicle until all required monitoring systems indicate
complete readiness before attempting emissions testing. Do not send a customer to I/M testing until the readiness meets the minimum state
requirements.
4. Contact the Technical Assistance Center (TAC) if there are difficulties setting readiness on a TDI clean diesel vehicle.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Required Parts and Tools
VAS-PC, 5052, 6150, or equivalent tool.
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
Emissions - IM Issues Due To Readiness Codes Not Set
01 TDI clean diesel I/M (Inspection Maintenance) testing issues due to readiness not set
01 12 48
2023297/2
June 11, 2012.
Superceded Technical Service Bulletin Group 01 number 10 - 06 dated May 07, 2010 for reasons listed below.
Affected Vehicles
Condition
^ DTCs were recently erased from the vehicles engine control module (ECM).
^ An Audi TDI clean diesel is not ready for I/M (Inspection Maintenance) testing due to readiness codes not being fully set.
Tip: This does not indicate any technical problems with the vehicle, only that more driving may be necessary to set full OBD readiness.
^ Certain environmental conditions and customer driver profiles may extend the drive time required to fully set readiness on TDI clean diesel
vehicles. Fully setting the DPF monitoring function requires a cycle of building soot and burning the soot off during a regeneration process.
Tip: If possible, advise customer not to service vehicle directly before I/M inspection. If the readiness bits are reset, this can create a condition
where extensive driving is required prior to setting full readiness.
Technical Background
Some readiness codes on Audi TDI clean diesel vehicles require special driving conditions to be set. If DTCs have been recently erased from the
vehicles ECM, it may take additional driving under different conditions to fully set OBD readiness parameters.
MVB 89 (on non-UDS protocol ECMs) will store correct data concerning OBD readiness.
Tip: Information on the readiness status on UDS protocol vehicles is available by reading the Mode 1 - Mode 10 data in the OBD section of the
scantool.
Audi Q7 Quattro 101
Audi Q7 Quattro 102
Interpreting OBD Readiness (MVB 89)
Quick Reference Table
Production Solution
Not applicable.
Service
1. To check the correct status of OBD readiness, refer to MVB 89 and the supplemental information in the Technical Background section
(applies to non-UDS protocol vehicles). For ECMs with UDS protocol, readiness status can be obtained by reading the Mode 1 - Mode 10
data within the OBD section of the scantool.
2. If any OBD system indicates incomplete monitoring ("1" shown in Byte 4) with no DTCs stored in the ECM, no repair is necessary.
Tip: There is no need to repair any vehicle system due to readiness not being set. Repair work is required only if there is a relevant DTC stored
within the ECM and the MIL is illuminated. Ignore pending DTCs.
Tip: Do not reset the ECM unless a DTC is saved in memory and the MIL is illuminated. Ignore pending DTCs. Resetting the ECM will erase the
readiness codes and additional driving will be required to set the eadiness codes.
Audi Q7 Quattro 103
3. The vehicle requires additional driving to complete the OBD readiness checks. Drive the vehicle until all required monitoring systems indicate
complete readiness before attempting emissions testing. Do not send a customer to I/M testing until the readiness meets the minimum state
requirements.
4. Contact the Technical Assistance Center (TAC) if there are difficulties setting readiness on a TDI clean diesel vehicle.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Required Parts and Tools
VAS-PC, 5052, 6150, or equivalent tool.
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
