Acura P16BC: Alternator FR Terminal Circuit/IGP Circuit Low Voltage

Is your scanner showing Acura P16BC?
No worries. We'll show you what it means and how to deal with it.

Presented by

Randy Worner

00:00/00:00

Acura P16BC: Alternator FR Terminal Circuit/IGP Circuit Low Voltage

OVERVIEW

Severity

High

DIY Difficulty Level

Intermediate

Repair Cost

$50-$300

Can I Still Drive?

Yes (Short-term only)

What Does The Acura P16BC Code Mean?

Condition for setting the DTC:

Engine speed 500-3,000 rpm, alternator control mode 14.5 volts minimum. The IGP terminal voltage is 12.0 V or less, and the alternator power generation amount is 0.5 % or less, for at least 60 seconds. The execution time is continuous.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.

What Are The Potential Causes Of The Acura P16BC Code?

Below are some potential causes of this DTC:

Blown fuse
Poor connections or loose terminals at the alternator connector
Poor alternator ground
open in the wire between the alternator and the fuse in the under-dash fuse/relay box
Faulty alternator
PCM may need to be updated with the latest software
Faulty PCM