DD-3464-0 moderate Detroit Diesel DD Series ›

Throttle Actuator Position Exceeded Upper Limit

The DD-3464-0 (Detroit Diesel DD Series) diesel fault code means: Throttle Actuator Position Exceeded Upper Limit. This is a moderate severity code.

This is a standard J1939 fault, not a proprietary code. DD-3464-0 is how this equipment displays SPN 3464 with FMI 0 (data valid but above normal — most severe) under the SAE J1939 standard used across heavy equipment. The same SPN can appear on any J1939-compliant machine regardless of brand — so cross-referencing it against your engine maker's documentation is valid even when the equipment brand differs.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
intermediate
Estimated cost
$500-$2,200
Mobile mechanic network · I-5 corridor pilot

Down with a Detroit Diesel fault on the road?

We are building a network of verified mobile diesel and reefer technicians along the freight corridor. It is not live yet — no one can be dispatched to you today. You can see where the pilot is launching and register interest.

View pilot availability →

What Are the Symptoms of DD-3464-0?

  • Check Engine Light / Amber Warning Lamp illuminated
  • Noticeable power loss under load

What Causes DD-3464-0? (Most Likely First)

  • Sticking intake throttle Very Likely
  • Failed position sensor Likely

Can I Still Drive with DD-3464-0?

Yes, but fix soon. DD-3464-0 is rated moderate severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring it.

Frequently Asked Questions

What is Detroit Diesel fault code DD-3464-0?

Detroit Diesel fault DD-3464-0 (SPN 3464 FMI 0) indicates: Throttle Actuator Position Exceeded Upper Limit. It is a moderate-severity fault and is commonly seen on DD13/DD15/DD16 engines in Freightliner and Western Star chassis.

Can I drive my Freightliner or Western Star with fault DD-3464-0?

It depends on severity. Critical and serious faults trigger derate or engine shutdown — do not continue driving. Moderate faults usually allow continued operation short-term but schedule repair to prevent cascading aftertreatment damage.

How much does it cost to fix Detroit Diesel fault DD-3464-0?

Estimated repair cost is $500-$2,200. Sensor/harness fixes fall at the low end; turbo actuator, injector, aftertreatment component, or head gasket repairs fall at the high end. Detroit DDDL software and sometimes factory parameter reset are required for proper reset.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose DD-3464-0?

  1. Clean intake throttle.

  2. Calibrate via DDDL.

  3. Replace if binding.

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J1939-73Application Layer: Diagnostics (defines the SPN/FMI fault-identifier framework)

Which Vehicles Commonly Get DD-3464-0?

  • Freightliner Cascadia with DD15
  • Freightliner Cascadia with DD13
  • Freightliner Cascadia with DD16
  • Western Star 4700 with DD13/DD15
  • Western Star 4900 with DD15/DD16
  • Western Star 5700 XE with DD15
  • Freightliner M2 106 with DD13
  • Freightliner M2 112 with DD13

Explore More

More Detroit Diesel DD Series codes → Diesel home All diesel codes Heavy-duty Guides

Was this helpful?

Send this to whoever is fixing the truck — your tech, or the person asking what the fault means.