Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN1999GTI (1J1) L4-2.0L (AEG)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE CONTROL - DTC P1127 (17535) SET
1999 Volkswagen GTI (1J1) L4-2.0L (AEG)
Engine Control - DTC P1127 (17535) Set
1999 Volkswagen GTI (1J1) L4-2.0L (AEG)SECTION Engine Control - DTC P1127 (17535) Set
Group: 01
Number: 99-16
Date: Sept. 30, 1999
Subject:
DTC P1127 (17535) Stored in DTC Memory
Model(s):
New Golf, New Jetta (2.0L, 2.8L VR6 and TDI Engine)
1999 with Engine Compartment Relay Panel
Condition
DTC P1127 (17535) stored in DTC memory.
May be caused by the Mass Air Flow (MAF) sensor harness -arrow- contacting the engine compartment relay panel cover (when equipped).
Service
If harness contacts relay cover:
- Remove relay cover.
- Relocate relay -arrow- to the rear of relay housing as shown.
- Install Part No: 1J0 941 385A 01C (new relay cover) -arrow- as shown.
- Clear any stored DTC's.
CAUTION!
Part numbers are for reference only. Always check with your Parts Dept. for the latest parts information.
When procedure applies to vehicles with in the New Vehicle Limited Warranty, use the following:
Part Identifier: 9715
Labor Operation: 9715510 50TU
Number: 99-16
Date: Sept. 30, 1999
Subject:
DTC P1127 (17535) Stored in DTC Memory
Model(s):
New Golf, New Jetta (2.0L, 2.8L VR6 and TDI Engine)
1999 with Engine Compartment Relay Panel
Condition
DTC P1127 (17535) stored in DTC memory.
May be caused by the Mass Air Flow (MAF) sensor harness -arrow- contacting the engine compartment relay panel cover (when equipped).
Service
If harness contacts relay cover:
- Remove relay cover.
- Relocate relay -arrow- to the rear of relay housing as shown.
- Install Part No: 1J0 941 385A 01C (new relay cover) -arrow- as shown.
- Clear any stored DTC's.
CAUTION!
Part numbers are for reference only. Always check with your Parts Dept. for the latest parts information.
When procedure applies to vehicles with in the New Vehicle Limited Warranty, use the following:
Part Identifier: 9715
Labor Operation: 9715510 50TU
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.