CarFaultIQ

OBD-II Code Decoder

Search the licensed P, B, C, and U reference library by code, definition, system, or manufacturer. Reference-only results are not a complete diagnosis.

  • 12,128 OBD-II codes
  • 18,805 reference definitions
  • 16,185 publicly searchable across 10,181 codes

Review-withheld definitions are excluded; lookup records are not published diagnostic pages.

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P1129 — vehicles with official records naming this code

P1129 is named in NHTSA-published manufacturer communications or investigations for 4 vehicle families, including:

A code named in a manufacturer communication means the document refers to it for those vehicles. It is not a diagnosis of any car, and it does not mean the code is common on that vehicle.

Matching definitions: 10 · Unique codes: 1.

Code Meaning System Scope Manufacturer Severity
P1129 MAP Higher Than Expected Powertrain Manufacturer-specific Acura Not classified
P1129 Downstream Heated Oxygen Sensor Signals Reversed Powertrain Manufacturer-specific Ford Not classified
P1129 MAP Higher Than Expected Powertrain Manufacturer-specific Honda Not classified
P1129 MAP Higher Than Expected Powertrain Manufacturer-specific Infiniti Not classified
P1129 Electronic Throttle Control System Powertrain Manufacturer-specific Lexus Not classified
P1129 Downstream Heated Oxygen Sensor Signals Reversed Powertrain Manufacturer-specific Lincoln Not classified
P1129 Downstream H02S Sensors Swapped Powertrain Manufacturer-specific Mazda Not classified
P1129 Downstream Heated Oxygen Sensor Signals Reversed Powertrain Manufacturer-specific Mercury Not classified
P1129 Electric Throttle Control System Powertrain Manufacturer-specific Toyota Not classified
P1129 Long Term Fuel Trim Bank 2 System Too Rich Powertrain Manufacturer-specific Volkswagen Not classified