P0ABB CADILLAC - Hybrid/EV Battery Voltage Sensor Performance

P0ABB CADILLAC Possible Causes

• Faulty Battery Energy Control Module
• Battery Energy Control Module harness is open or shorted
• Battery Energy Control Module circuit poor electrical connection

How is the P0ABB CADILLAC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P0ABB CADILLAC code

Labor: 1.0

The cost to diagnose the P0ABB CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

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Possible Symptoms

• Engine Light ON (or Service Engine Soon Warning Light)

P0ABB CADILLAC Meaning

The Hybrid/EV Battery Pack contains a total of 32 cell groups in the Hybrid/EV Battery Pack assembly. These cell groups are electrically connected in series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 118 V DC. The battery cells are grouped together into two sections, each with 16 cell groups.
The Battery Energy Control Module monitors the voltage of the 32 battery cell groups. A voltage sense circuit is attached to each individual cell group. Each of these circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness connectors the voltage sense circuits to the Battery Energy Control Module, located directly above the Hybrid/EV Battery Pack. The Battery Energy Control Module also monitors the Hybrid/EV Battery Pack voltage in it's entirety. The Battery Energy Control Module compares the voltage of the entire pack to that of the sum of the voltages measures at each cell.
Diagnostics and system status are communicated from the Battery Energy Control Module to Hybrid Powertrain Control Module through serial data.

More Information

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Repair Importance Level:3 Repair Difficulty Level:3