P0087

Factory Manual References

Factory service manual diagnostic procedure for 2008 audi s8

Engine Will Not Start With Possible Mil/EPC On (P0087, P0088, P310B) (GROUP 24, NO. 10-42)

Publication date: 2010-07-15
Reference number: GROUP 24, NO. 10-42
Supersedes refnos: 2017475, GROUP 24, NO. 08-16, GROUP 24, NO. 08-63, GROUP 24, NO. 09-08, GROUP 24, NO. 10-34

ENGINE WILL NOT START WITH POSSIBLE MIL/EPC ON (P0087, P0088, P310B)

ENGINE WILL NOT START WITH POSSIBLE MIL/EPC ON (P0087, P0088, P310B)

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 24, NO. 10-42 (2017475/5), Date of Issue:  July 15, 2010
AUDI: R8 2009; S5 2009; A6 2007 - 2009; S6 2007 - 2009; A8 2007 - 2009; S8 2007 - 2009; Audi Q7 2007 - 2009
GROUP: 24 - Multiport Fuel Injection
Superceded Bulletin(s): GROUP 24, NO. 10-34, Date of Issue:  June 16, 2010

SUBJECT

Engine will not start with possible MIL/EPC on (P0087, P0088, P310B) 

24 10 42 2017475/5 July 15, 2010. Supersedes Technical Service Bulletin Group 24 number 10-34 dated June 16, 2010.

APPLICABLE MODELS AND YEARS

Model(s) Year VIN Range Vehicle-Specific Equipment
R8 2009 All BYH Engine
S5 2009 All CAUA Engine
A6 2007 - 2009 All BVJ Engine
S6 2007 - 2009 All BXA Engine
A8 2007 - 2009 All BVJ Engine
S8 2007 - 2009 All BSM Engine
Audi Q7 2007 - 2009 All BAR Engine

CONDITION

  • Engine doesn't start.
  • The following DTC entries may be logged in the fault memory individually or in combination:
    • P0087  (Fuel Rail/System Pressure - Too Low).
    • P0088  (Fuel Rail/System Pressure - Too High).
    • P310 B  (Low Fuel Pressure Regulation, fuel pressure outside of tolerance).

TECHNICAL BACKGROUND

A general increase of the rail pressure after shutting off engine is normal, but rail pressure that is too high (above 140bar) can prevent the starting authorization.

This can be caused by incorrectly installed or malfunctioning pressure relief valves or a blockage on the low fuel pressure system return lines.

PRODUCTION SOLUTION

No change.

SERVICE

ENGINE DOES NOT START, WITH NO DTC ENTRY

  1. In Guided Fault Finding, look for perception symptoms without entry.

    When the memory is empty, follow the following path in GFF: Complaint report >> Complaint related to observation >> Powertrain (RG 01; 10-39) >> Engine >> Start >> Engine does not start after short standing time  . Press accept.  Press green arrow  on right to proceed.

  2. Check the fuel pressure.

    If the engine does not start although the low pressure system is correct, the following message appears in the test program: "If the engine only does not start when hot, a stuck pressure relief valve or a blockage in the low pressure return system may cause the condition. Because of the hot engine, the fuel expands after switching off the engine and increases the fuel pressure to such an extent that the engine control unit can prevent an engine start. Let the engine cool down and try to start the engine. If the engine starts when the vehicle is cool, check the pressure relief valve and the low pressure return system."

WHEN DTC ENTRIES ARE PRESENT

  1. First check the low and high pressure in the fuel system using the appropriate MVB for the rail fuel pressure in GFF.
  2. If both the low and high fuel pressures are correct, check the low fuel pressure return lines and the pressure relief valves in the rail for a blockage. Replace them if necessary.

Follow GFF consistently to the end to avoid any unnecessary parts replacement.

WARRANTY

WARRANTY INFORMATION

Claim Type:  Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin is informational only.
Service Number:  2409
Damage Code:  0040
Diagnostic Time:  GFF tests 0150 0000 50 TU max
Road test prior to service procedure No allowance 0 TU
Road test after service procedure 0121 0004 10 TU
Technical diagnosis at dealer's discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:  As per TSB #2017475/5

ADDITIONAL INFORMATION

All part and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Dept. and service manuals for the latest information.

Mil On (DTC P310B, P129F, P008B, P129E, P008A, P2540, P0087) (GROUP 24, NO. 11-06)

Publication date: 2014-01-09
Reference number: GROUP 24, NO. 11-06
Supersedes refnos: 2015106, GROUP 01, NO. 14-57, GROUP 24, NO. 07-19, GROUP 24, NO. 08-12, GROUP 24, NO. 08-56, GROUP 24, NO. 10-01, GROUP 24, NO. 10-02

MIL ON (DTC P310B, P129F, P008B, P129E, P008A, P2540, P0087)

MIL ON (DTC P310B, P129F, P008B, P129E, P008A, P2540, P0087)

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 01, NO. 14-57 (2015106/9), Date of Issue:  January 9, 2014
AUDI: All Models 2005 - 2008
GROUP: 01 - On-Board Diagnostic
Superceded Bulletin(s): GROUP 24, NO. 11-06, Date of Issue:  December 7, 2011

01 14 57 2015106/9 January 9, 2014. Supersedes Technical Service Bulletin Group 24 number 11-06 dated December 7, 2011.

APPLICABLE MODELS AND YEARS

Model(s) Year VIN Range Vehicle-Specific Equipment
All 2005 - 2008 All 2.0 TFSI engine
3.2 V6 FSI engine
3.6 V6 FSI engine
4.2 V8 FSI engine
5.2 V10 FSI engine

CONDITION

  • MIL on.
  • One or more of the following DTCs is stored in the engine control module, J623 (address word 01):
    • P310B00:  Low fuel pressure regulation fuel pressure outside specification
    • P129F00:  Low pressure fuel system pressure too high
    • P008B00:  Low pressure fuel system pressure too high
    • P129E00:  Low pressure fuel system pressure too low
    • P008A00:  Low pressure fuel system pressure too low
    • P254000:  Low pressure fuel system sensor circuit range/performance
    • P008700:  Fuel rail/system pressure too low

TECHNICAL BACKGROUND

Due to fuel intrusion into the low-pressure system fuel pressure sensor (G410), a false signal may be sent to the controller, resulting in a reading that is out of tolerance.

Tip:  Comparing Measured Value Block 103 with 106 is not an accurate method for diagnosing G410. In order to diagnose G410 accurately, use a mechanical gauge and compare results with the low-side fuel pressure Actual Value in Measured Value Block 103.

PRODUCTION SOLUTION

Improvements to G410 fuel pressure sensor.

SERVICE

  1. Verify that the customer did not run out of fuel at the time that the DTCs were stored. If the vehicle did have a low fuel level, DTCs P310B00, P129E00  , and/or P008A00  may be accompanied by DTC P125000  . If DTC P125000 is present, it is likely that the faults occurred due to a low fuel level and are not related to a malfunction of the G410.
  2. Follow GFF for each DTC.
  3. To check the G410, measure the fuel pressure with a mechanical gauge (VAG 1318), using the following method:
    1. Start the engine and allow it to idle for at least one minute.
    2. Stop the engine, but keep the ignition on.
    3. Measure the actual low-side fuel pressure on the low pressure supply line in the engine compartment (Figure 1).
      G09069163
  4. To calculate the adjusted gauge measurement value, add 1 bar to the value obtained from the mechanical gauge.
  5. Compare the adjusted gauge measurement value to the Actual Value stored in MVB 103 field 1.
  6. If the MVB 103 field 1 value deviates more than ±1.0 bar from the adjusted gauge measurement value, then the DTC was likely triggered by a faulty G410 low-side fuel pressure sensor. Document the adjusted gauge measurement value and MVB value on the Repair Order, then perform the Sensor replacement procedure below.

Sensor replacement procedure

  1. Replace the G410 low-side fuel pressure sensor (Figure 2).
    G09069164
  2. Clear DTCs and verify that the problem was eliminated.
  3. Run Basic Settings 103 to adapt system.
  4. Do not replace the high pressure fuel pump, electrical fuel pump, fuel pump control module or fuel filter unless problem persists and further diagnosis indicates a malfunction of any of these components.

WARRANTY

WARRANTY INFORMATION

Claim Type:  Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin is informational only.
Service Number:  2409
Damage Code:  40
Labor Operations:  Fuel pressure sender remove + reinstall 2409 XXXX (See Elsa for specific vehicle/engine) See Elsa
Diagnostic Time:  GFF 0150 0000 Time stated on diagnostic protocol
Measuring fuel pressure with VAG 1318 mechanical gauge 2409 0399 Max 40 TU
Road test prior to service procedure No allowance 0 TU
Road test after service procedure 0121 0004 10 TU
Technical diagnosis at dealer's discretion (Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:  As per TSB #2015106/9

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures Manual  . Claims are subject to review or audit by Audi Warranty.

REQUIRED PARTS AND TOOLS

PARTS INFORMATION

Part Number Part Description Quantity
06E906051K Thrust sensor 1
03C906051A Thrust sensor for 3.6 V6 motor (engine code BHK) 1

ADDITIONAL INFORMATION

All parts and service references provided in this TSB (2015106) are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.

Engine Will Not Start With Possible Mil/EPC On (P0087, P0088, P310B) (GROUP 24, NO. 10-42)

Publication date: 2010-07-15
Reference number: GROUP 24, NO. 10-42
Supersedes refnos: 2017475, GROUP 24, NO. 08-16, GROUP 24, NO. 08-63, GROUP 24, NO. 09-08, GROUP 24, NO. 10-34

ENGINE WILL NOT START WITH POSSIBLE MIL/EPC ON (P0087, P0088, P310B)

ENGINE WILL NOT START WITH POSSIBLE MIL/EPC ON (P0087, P0088, P310B)

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 24, NO. 10-42 (2017475/5), Date of Issue:  July 15, 2010
AUDI: R8 2009; S5 2009; A6 2007 - 2009; S6 2007 - 2009; A8 2007 - 2009; S8 2007 - 2009; Audi Q7 2007 - 2009
GROUP: 24 - Multiport Fuel Injection
Superceded Bulletin(s): GROUP 24, NO. 10-34, Date of Issue:  June 16, 2010

SUBJECT

Engine will not start with possible MIL/EPC on (P0087, P0088, P310B) 

24 10 42 2017475/5 July 15, 2010. Supersedes Technical Service Bulletin Group 24 number 10-34 dated June 16, 2010.

APPLICABLE MODELS AND YEARS

Model(s) Year VIN Range Vehicle-Specific Equipment
R8 2009 All BYH Engine
S5 2009 All CAUA Engine
A6 2007 - 2009 All BVJ Engine
S6 2007 - 2009 All BXA Engine
A8 2007 - 2009 All BVJ Engine
S8 2007 - 2009 All BSM Engine
Audi Q7 2007 - 2009 All BAR Engine

CONDITION

  • Engine doesn't start.
  • The following DTC entries may be logged in the fault memory individually or in combination:
    • P0087  (Fuel Rail/System Pressure - Too Low).
    • P0088  (Fuel Rail/System Pressure - Too High).
    • P310 B  (Low Fuel Pressure Regulation, fuel pressure outside of tolerance).

TECHNICAL BACKGROUND

A general increase of the rail pressure after shutting off engine is normal, but rail pressure that is too high (above 140bar) can prevent the starting authorization.

This can be caused by incorrectly installed or malfunctioning pressure relief valves or a blockage on the low fuel pressure system return lines.

PRODUCTION SOLUTION

No change.

SERVICE

ENGINE DOES NOT START, WITH NO DTC ENTRY

  1. In Guided Fault Finding, look for perception symptoms without entry.

    When the memory is empty, follow the following path in GFF: Complaint report >> Complaint related to observation >> Powertrain (RG 01; 10-39) >> Engine >> Start >> Engine does not start after short standing time  . Press accept.  Press green arrow  on right to proceed.

  2. Check the fuel pressure.

    If the engine does not start although the low pressure system is correct, the following message appears in the test program: "If the engine only does not start when hot, a stuck pressure relief valve or a blockage in the low pressure return system may cause the condition. Because of the hot engine, the fuel expands after switching off the engine and increases the fuel pressure to such an extent that the engine control unit can prevent an engine start. Let the engine cool down and try to start the engine. If the engine starts when the vehicle is cool, check the pressure relief valve and the low pressure return system."

WHEN DTC ENTRIES ARE PRESENT

  1. First check the low and high pressure in the fuel system using the appropriate MVB for the rail fuel pressure in GFF.
  2. If both the low and high fuel pressures are correct, check the low fuel pressure return lines and the pressure relief valves in the rail for a blockage. Replace them if necessary.

Follow GFF consistently to the end to avoid any unnecessary parts replacement.

WARRANTY

WARRANTY INFORMATION

Claim Type:  Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin is informational only.
Service Number:  2409
Damage Code:  0040
Diagnostic Time:  GFF tests 0150 0000 50 TU max
Road test prior to service procedure No allowance 0 TU
Road test after service procedure 0121 0004 10 TU
Technical diagnosis at dealer's discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:  As per TSB #2017475/5

ADDITIONAL INFORMATION

All part and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Dept. and service manuals for the latest information.

Supporting Diagrams & Locations

Reference material from the factory manual for this diagnostic procedure.

Diagram

Malfunction messages

Diagram

Low Battery Charge: Excess Current Draw Location (GROUP 27, NO. 13-19)

Diagram

Low Battery Charge: Excess Current Draw Location (GROUP 27, NO. 13-19)

Diagram

Low Battery Charge: Excess Current Draw Location (GROUP 27, NO. 13-19)

Diagram

Low Battery Charge: Excess Current Draw Location (GROUP 27, NO. 13-19)

Diagram

Comfort System Central Control Module Connector End View (J393)

Location

Navigation system, overview of component location

Location

General information

Location

Component locations, general overview

Location

Component locations, general overview

Fuse/Relay

Digital Sound System Control Module J525 - up to model year 05, removing and installing

Fuse/Relay

Digital Sound System Control Module J525 BOSE - up to model year 05, removing and installing

Fuse/Relay

Malfunction messages

Fuse/Relay

Multimedia Signal Splitter R181 , harness connectors

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Fiber optic MOST-Bus, notes

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Front Information Display Control Head J685 , removing and installing

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Front/Center Console Control Head E461 , removing and installing

Procedure

Installed equipment tables, as of calendar week 22/04

Procedure

Installed equipment tables, up to calendar week 21/04

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