Service bulletin SB-05-16

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10052186
Published by NHTSA	2013-06-22
Manufacturer's number	SB-05-16
Manufacturer's date	2013-06-21
NHTSA component	ENGINE; ELECTRICAL SYSTEM

NHTSA's summary

HONDA: CERTAIN VEHICLES ARE EXPERIENCING ISSUES WITH MALFUNCTION OF ELECTRONIC THROTTLE CONTROL SYSTEM AND CHECK ENGINE LIGHT COMING ON (DTC P2101). MODELS 2012-2013 RIDGELINE. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine

Trouble codes named

P2101

Vehicles listed
HONDA RIDGELINE	2012

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
A21120A	2023-06-21. Service bulletin. Service News - The navigation clock and date are incorrect. This is due to a limited GPS receiver Capacity resulting in rollover of the internal chip memory; the rollover occurred on January 1, 2022, at 12:00AM local time.
A21120A	2022-02-04. Service bulletin. ServiceNews Article - The clock shows the incorrect time. This issue is due to a limited GPS receiver capacity resulting in "rollover" of the internal chip memory; the "rollover" will occur on January 1, 2022, at 12:00AM local time. As a result, once specific triggers are met, the navigation date and time will be incorrect.
DOR-M9J4S-07	2020-07-27. Service bulletin. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
DOR-M3J3F-07	2020-07-27. Service bulletin. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
DLR MSG - RFV -	2018-06-18. Service bulletin. Dealer message - American Honda (AHM) is investigating certain 2012-2014 Ridgelines with a complaint of MIL on with the DTC P2101 (Throttle Control System Malfunction) stored. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
ENG REQ - AER131	2018-02-26. Service bulletin. Engineering request for investigation - American Honda (AHM) is investigating certain 2012-2014 Ridgelines with a complaint of MIL on with the DTC P2101 (Throttle Control System Malfunction) stored. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
DLR MSG - RFV -	2018-02-26. Service bulletin. Dealer message - American Honda (AHM) is investigating certain 2012-2014 Ridgelines with a complaint of MIL on with the DTC P2101 (Throttle Control System Malfunction) stored. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
Service Bulletin	2017-07-17. Service bulletin. Service bulletin - The MIL comes on with DTC P2101 (electronic throttle control system malfunction) stored. The vehicle may enter failsafe mode and experience a lack of power or poor acceleration. The problem is intermittent, and cycling the ignition will usually restore the vehicle to its normal function. However, the MIL will remain on and DTC P2101 will be stored. The PGM-FI misinterprets the electronic throttle control system and sets DTC P2101.
ATS160715	2017-06-19. Service bulletin. TECHLINE SUMMARY ARTICLE - IF THE ENGINE IS OVERHEATING AND THERE’S ENGINE OIL MIXED IN THE COOLANT RESERVOIR, CHANCES ARE THE CYLINDER HEAD MAY BE CRACKED. A CRACK MAY FORM UNDER THE FRONT AND/OR REAR CAMSHAFT AT THE JOURNALS AND IS A RARE OCCURRENCE.
ATS160715	2016-12-28. Service bulletin. "TECHLINE SUMMARY ARTICLE - IF THE ENGINE IS OVERHEATING AND THERE’S ENGINE OIL MIXED IN THE COOLANT RESERVOIR, CHANCES ARE THE CYLINDER HEAD MAY BE CRACKED. A CRACK MAY FORM UNDER THE FRONT AND/OR REAR CAMSHAFT AT THE JOURNALS AND IS A RARE OCCURRENCE. YOU CAN SEE THIS CRACK FROM VISUAL INSPECTION. IT CAUSES ENGINE OIL TO ENTER THE COOLING SYSTEM AND COOLANT TO ENTER THE ENGINE LUBRICATION SYSTEM. REPLACE THE CYLINDER HEAD IF YOU FIND IT’S CRACKED."