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Diagnostic trouble code

P129E

P129E Fault Code

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Car Codes diagnostic trouble code

P129EDiagnostic priority

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A (LOW PRESSURE SYSTEM, PRESSURE TOO LOW); P2540 (LOW PRESSURE FUEL SYSTEM, PRESSURE OUT OF RANGE); P0087 (RAIL FUEL PRESSURE SYSTEM, PRESSURE TOO LOW). MODELS A3,4,6,8, S6,8, RS4, Q7, AND TT (2005-2008). *PE

01

Code interpretation

What P129E means

This code indicates Vehicle fault code with verified manufacturer evidence Its precise meaning depends on the reporting control module, complete failure-type suffix, model year, powertrain and software level.

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Driver experience

Symptoms you may notice

A stored diagnostic trouble code or a related system warning.

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Test, do not guess

Possible causes

The precise cause depends on the reporting module, vehicle specification, circuit condition and software level.

Evidence-led checks

Recommended diagnostic route

Save the complete scan and confirm the code against model-specific technical information before testing.

  1. Capture the evidenceSave the complete all-module scan, code suffixes and freeze-frame data.
  2. Prove the basicsTest battery condition, system voltage, power and grounds.
  3. Identify the reporterConfirm the module that logged the code and check circuit integrity.
  4. Compare live dataReview commanded and actual values under the conditions that set the code.
  5. Test before replacingUse model-specific wiring diagrams, pin tests and technical information.
  6. Verify the repairClear the code only after recording evidence, then confirm it does not return.

Vehicle fitment

Vehicle applicability

Audi S6 e-tron Sportback, Audi S8, Audi Q7, Audi A8, Audi A6 Saloon, Audi A3 Sportback, Volkswagen Passat

Before clearing

Can the code be cleared?

Clearing a code without fixing the cause removes useful evidence and may only switch the warning off temporarily. Save the full scan first; a permanent or repeatedly returning code needs testing.

A DTC is evidence, not a parts order.

Confirm the suffix, reporting module, model, year, engine and live data before replacing a component.

Verified public evidence

Manufacturer and model coverage

21 public manufacturer records match this search. These records support applicability research but do not replace VIN-specific workshop information.

P129EAudi A3 Sportback
A3 · 2005 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A3 Sportback
A3 · 2006 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A3 Sportback
A3 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A3 Sportback
A3 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A6 Saloon
A6 · 2005 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A6 Saloon
A6 · 2006 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A6 Saloon
A6 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A6 Saloon
A6 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A8
A8 · 2005 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A8
A8 · 2006 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A8
A8 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi A8
A8 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi Q7
Q7 · 2006 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi Q7
Q7 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi Q7
Q7 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi S6 e-tron Sportback
S6 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi S6 e-tron Sportback
S6 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi S8
S8 · 2007 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EAudi S8
S8 · 2008 · Powertrain

…DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A…

Source
P129EVolkswagen Passat
PASSAT · 2007 · Powertrain

VOLKSWAGEN: MIL ON DTCS P310B, P129F, P008B, P129E, P008A, P2540 OR P0087 STORED IN ECM FAULT MEMORY. MIL ON AND ONE OR MORE OF THE FOLLOWING DTCS ARE STORED IN…

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