Energy Info Screen Shows Mileage Accumulation Using Fuel When Using Battery Power (PI0801A)

Publication date: 2015-07-09
Reference number: PI0801A

ENERGY INFO SCREEN SHOWS MILEAGE ACCUMULATION USING FUEL WHEN USING BATTERY POWER

TECHNICAL SERVICE BULLETIN

Reference Number(s): PI0801A, Date of Issue: Jul 9, 2015

Affected Model(s):	2013-2015 Chevrolet Volt 2013-2015 Opel Ampera
Attention:	This PI also applies to any of the above models that may be Europe and Australia Export vehicles.
Supercedes:	This PI has been revised to add the 2014-2015 Model Years. Please discard PI0801.

CONDITION/CONCERN

Some customers may comment that when pressing the leaf button, the Energy Info screen shows mileage driven using fuel, when the customer actually was driving in electric mode.

A software anomaly has occurred after a HPCM2 update. This anomaly will self correct during the next fully deplete or charge complete cycle.

RECOMMENDATION/INSTRUCTIONS

Only following a flash programming event of the HPCM2, the Energy Usage displayed in the center stack is displayed incorrectly, showing as fuel instead of HV battery charge used. The stored values are correct, the display is incorrect.

Technicians should inform the customer to do the following:

Fully deplete the HV battery to the low SOC threshold - this takes time to correct the display and requires mileage accumulation.
Perform a full plug-in charge and obtain "Charge Complete" status. The algorithm will reset all values associated with the Energy Usage center stack display, including this memory store.

NOTE:

For lifetime fuel economy, even though the Energy Info screen shows mileage driven with fuel, the mileage accumulated for the lifetime fuel economy is not affected. Only the Energy Info screen display for that charge cycle will display incorrectly.