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P0055 on the 2014 Land Rover Range Rover

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0055
LTB00671NAS32017-06-07. Service bulletin. "SITUATION: THE ENGINE MALFUNCTION INDICATOR LAMP (MIL) MAY BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODE (DTC) P0042, P0043, P0044, P0055, P0061, P0062, P0063, P0142, P0143, P0144, P0147, P0162, P0163, P0164, AND/OR P0167 - RELEVANT TO THE POST-CATALYST HEATED OXYGEN SENSORS - MAY BE STORED IN THE ENGINE CONTROL MODULE (ECM). CAUSE: THIS MAY BE CAUSED BY THERMAL SHOCK WHEN WATER CONTACTS THE HEATED SENSING ELEMENT."
LTB00671NAS22017-06-01. Service bulletin. "SITUATION: THE ENGINE MALFUNCTION INDICATOR LAMP (MIL) MAY BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODE (DTC [(P0042, P0043, P0044, P0055, P0061, P0062, P0063, P0142, P0143, P0144, P0147, P0162, P0163, P0164, AND/OR P0167]) RELEVANT TO THE POST-CATALYST HEATED OXYGEN SENSORS MAY BE STORED IN THE ENGINE CONTROL MODULE (ECM). CAUSE: THIS MAY BE CAUSED BY A POST-CATALYST HEATED OXYGEN SENSOR SOFTWARE ERROR."
LTB00671NAS12017-06-01. Service bulletin. "SITUATION: THE ENGINE MALFUNCTION INDICATOR LAMP (MIL) MAY BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODE (DTC [(P0042, P0043, P0044, P0055, P0061, P0062, P0063, P0142, P0143, P0144, P0147, P0162, P0163, P0164, AND/OR P0167]) RELEVANT TO THE POST-CATALYST HEATED OXYGEN SENSORS MAY BE STORED IN THE ENGINE CONTROL MODULE (ECM). CAUSE: THIS MAY BE CAUSED BY A POST-CATALYST HEATED OXYGEN SENSOR SOFTWARE ERROR."
SSM631572017-05-31. Service bulletin. "ISSUE: CHECK ENGINE WARNING LIGHT ILLUMINATED. DTC’S IN THE ENGINE CONTROL MODULE RELEVANT TO THE OXYGEN SENSORS ARE FOUND TO BE STORED, THESE MAY INCLUDE ANY OF THE FOLLOWING CODES P0042, P0043, P0055, P0061, P0062, P0063, P0142, P0144, P0162. CAUSE: MANUFACTURING FAULT AT THE SUPPLIER – MISALIGNMENT WITHIN THE SENSOR LEADING TO SIDE LOAD ON THE CERAMIC INTERNAL TO THE SENSOR. THIS PRE-STRESS, IN COMBINATION WITH NORMAL VEHICLE USE LEADS TO PREMATURE COMPONENT MALFUNCTION."

4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.