Service bulletin PIC5920B

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	10125935
Published by NHTSA	2017-12-22
Manufacturer's number	PIC5920B
Manufacturer's date	2014-06-04
NHTSA component	ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the coolant level in the Hybrid/EV Battery Pack. If the coolant is found low follow published Service Information diagnostics. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, then update the Hybrid Powertrain Control Module2 and Battery Energy Control Module with the latest Calibrations in TIS-2-Web. Technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Hybrid and electric drive

Trouble codes named

P0AA6, P0DAA, P1F0E

Vehicles listed
CADILLAC ELR	2014
CHEVROLET VOLT	2011, 2012, 2013, 2014

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

Recalls for the same vehicles and component
18V397000	2018-06-14. HYBRID PROPULSION SYSTEM
15V145000	2015-03-13. ELECTRICAL SYSTEM:IGNITION; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
2015104	2015-03-12. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
18-NA-180	2025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-180	2025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
25-NA-087	2025-05-02. Service bulletin. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
25-NA-052	2025-04-28. Service bulletin. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
23-NA-001	2025-04-28. Service bulletin. This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
13-08-116-001K	2025-04-25. Service bulletin. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
24-NA-098	2025-04-24. Service bulletin. This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
15-06-03-001F	2025-04-15. Service bulletin. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
21-NA-043	2025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
18-NA-180	2025-01-30. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.