P2D78

Battery Charger Control Module B Processor Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Problems with charging a high-voltage battery
The car goes into emergency mode
Reduced engine power

Causes

Processor failure in the charging control module
Module power problems
Short circuit in control circuit
Module software error
Wiring harness damage

How to Fix

Charging control module diagnostics
Checking power and grounding circuits
Module software update
Replacing the charging control module if necessary
Checking the condition of the high-voltage battery

Related codes

P2D77 P2D79 P0AA6