NHTSA ID Number: 10163668
Manufacturer Communication Number: PIC5920J
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.
PIC5920E
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 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.
10 Affected Products
Vehicles
SEOCONTENT-START
Bulletin No.: PIC5920J
Published date: 07/19/2019
Preliminary Information
PIC5920J Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6 And/Or P1FFF P1F0E
P0DAA
Models
Brand: Model: Model Years:
VIN:
from to
Engine: Transmissions:
Chevrolet Volt 2011 – 2014 All All
LUU MKA Cadillac ELR 2014 – 2016 All
All LUU MKA Opel Ampera 2011 – 2014
All All LUU MKA Holden Volt
2013 – 2014 All All LUU MKA
Supersession Statement
This PI was superseded to update Warranty Information. Please discard PIC5920H.
Condition / Concern
Some customers may comment that their vehicle will not charge. Customers may also comment that a
Check Engine Lamp is illuminated. Technicians may find a current code P0AA6 and / or a P1F0E set on
2011-2013 Volt or a P0DAA on 2014 Chevy Volt, Opel Ampera or Cadillac ELR in the HPCM2. When
diagnosing these DTC’S, potential causes to consider when evaluating the vehicle are:
1. A loss of Hybrid/EV Battery Pack coolant (external or internal to the Hybrid/EV Battery Pack)
2. A loss of high voltage isolation within the battery cells or battery sections themselves
Recommendations / Instructions
Locate the Isolation Test Resistance that is located in the HPCM 2 data list under HPCM 2 / Data
Display / Data Display / Hybrid/EV Powertrain Control Module 2 Data and note the current value on
the repair order.
Also note the Isolation Resistance from the freeze frame records in the HPCM2 for the P0AA6, P1F0E,
and/or P0DAA DTC.
Inspect Hybrid/EV Battery Pack coolant level by doing both of the following:
Note if the coolant level is low in the under hood reservoir.
Remove the drain plug for the battery to see if any water/coolant drains out, indicating a coolant
leak in the battery pack.
If necessary, refer to the Hybrid/EV Battery Cooling System Diagnostic in Service Information.
Important: All P0AA6 failures must include an inspection of 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 GM Technical
Assistance Center (TAC).
If the coolant level in the reservoir is at the proper level and there is no coolant or water
drained from the battery from the drain plug inspection.
2011 – 2014
Program the HPCM2 (K114B) and the BECM K16 with the latest calibration. If DTC sets again, review
freeze frame information again and follow SI diagnostics
2015 – 2016
Please follow SI for the DTC that set after performing the coolant plug inspection
Important: If you have any moisture that is found in the battery during the drain plug inspection
or the Isolation test resistance will not go above 275 kOhms after the HPCM2 and the BECM have been
updated, please contact the Technical Assistance Center (TAC) for further direction.
Warranty Information
For vehicles repaired under the EV coverage, use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
For 2011- 2014 Volt/Ampera And 2014 Cadillac ELR
Labor Operation Description
Labor Time 2880268* Reprogram the
HPCM2 and the BECM. 0.6 hr
* This is a unique labor operation for bulletin use only. This will not be published in the Labor
Time Guide.
The labor code above is covered under the Voltec or Emission warranty , coverage code: V or
E
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition
exhibited is resolved without completing every step, the remaining steps do not need to be
performed.
SEOCONTENT-END
Bulletin No.: PIC5920J
Published date: 07/19/2019
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Bulletin No.: PIC5920H
Published date: 06/17/2019
To View or Download this Document Click Here
Bulletin No.: PIC5920G
Published date: 07/6/2017
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Bulletin No.: PIC5920F
Published date: 03/8/2017
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Bulletin No.: PIC5920E
Date: Aug-2015
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Bulletin No.: PIC5920D
Date: Sep-2014
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Bulletin No.: PIC5920D
Date: September, 2014
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Bulletin No.: PIC5920C
Date: Jun-2014
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Bulletin No.: PIC5920C
Date: June, 2014
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Bulletin No.: PIC5920B
Date: Jun-2014
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Bulletin No.: PIC5920B
Date: June, 2014
To View or Download this Document Click Here
Bulletin No.: PIC5920A
Date: Nov-2013
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Bulletin No.: PIC5920A
Date: November, 2013
To View or Download this Document Click Here
Bulletin No.: PIC5920
Date: Oct-2013
To View or Download this Document Click Here
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Dear sirs,
Salute from Georgia. I, Paradashvili Nugzar, owner of the OPEL AMPERA – 2012 win/code Nr. 1G0R86E4XCU117710, baught the car in Holland. I am using the car still approximate 1 year and now computer for the car by the master write the information codes: P1F0E, P0AA6, P1FFF. As master told us all this problems were solved and now our car needs only update with the computer. If you have in Georgia dealer, who can make update with original computer, please inform us about it. If not please inform us, if program for Chevrolet Volt will do the same job?
Thanks in Advance for your help.
Best regards
Paradashvili Nugzar
Any shop that has an J2534 Device, can get an subscription from GM and reprogram the PCM.