TT 20 18 05

Service Bulletin Details

Public Details for: TT 20 18 05

Low side fuel pressure sensor explanation.


- 2018 - 2017 - 2016 - 2015 - 2014 -

Technical Tips
Technical Tip
Topic
20-18-05TT - DTC P0087 and Fuel System Diagnosis - Gasoline Engines Only
Market area
United States 444 Volkswagen of America, Inc. (6444)
Brand
Volkswagen
Date
December 7, 2018
Condition
ATTENTION:
THIS IS A TECH TIP, NOT A TECHNICAL BULLETIN.
TECH TIPS ARE NOT ASSOCIATED WITH WARRANTY CLAIMING.
DTC P0087 and Fuel System Diagnosis - Gasoline Engines Only
Model(s)
Jetta, Golf, Golf
Wagon, Beetle,
Beetle
Convertible,
Passat
Year
Eng. Code
Trans. Code
VIN Range From
VIN Range To
All
All
All
1.8L, 2.0L
2014-2018
(CPRA,
CPKA,CPPA,
CPLA)
Technical Background
Vehicles experiencing crank no start, rough running, or drivability concerns with suspected low fuel pressure.
Concerns may be intermittent. Misfire faults and low fuel pressure faults may be present.
Service
TSI engines that are not equipped with a low fuel pressure sensor may still have a measure value block (MVB) labeled
as low fuel pressure. This MVB is not valid and displays 11 bar under all conditions. This MVB is to not be used for
diagnosis, it will be necessary to install low pressure fuel gauge to manually check low side fuel pressure.
Follow the Elsa procedure for checking low side pressure. (Note low side pressure specs in Elsa are NOT with the
engine running). Compare to like vehicle at operating temperature to verify normal idle pressure. If pressure is low,
check residual pressure. If below spec per Elsa, close the valve to the engine and evaluate to verify if residual
pressure loss is on the low or high side of the fuel system. If excessive pressure loss is still occurring with the valve
closed, pressure loss is on the low side. Inspect for external leaks, if none are found then the retention valve in the in
tank fuel pump or fuel filter (if applicable) is at fault.
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Technical Tips
Additional Information
Revision History
Revision Number
Released Date
Reason For Update
2053220/1
12/7/18
Original publication.
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