Acura P1640: Output Driver Module 'A' Circuit Malfunction

Is your scanner showing Acura P1640?
No worries. We'll show you what it means and how to deal with it.

Presented by

Randy Worner

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Acura P1640: Output Driver Module 'A' Circuit Malfunction

OVERVIEW

Severity

Medium

DIY Difficulty Level

Intermediate

Repair Cost

$200-$450

Can I Still Drive?

Yes (Short-term only)

What Does The Acura P1640 Code Mean?

Condition for setting the DTC: DTC P1618 not set, engine started, engine running, system voltage over 13.2v for 4 seconds, and the PCM detected an open circuit condition and an unexpected high voltage condition on the Output Driver Module circuit (A/C Clutch Relay or Purge Solenoid).

What Are The Potential Causes Of The Acura P1640 Code?

Below are some potential causes of this DTC:

One or more output device driver circuits connected to ODM ‘A’ has an open circuit condition
One or more output device driver circuits connected to ODM ‘A’ has a short-to-voltage condition
Check for an open power circuit to the related output device