What does Cummins fault code 3314 mean?

Name: ECM Performance
Address: Fort Lauderdale, FL, 33325, US
Telephone: (888) 768-2447
Price range: $$-$$$

AftertreatmentCummins Diesel ECM

Fault Code 3314

DPF, DEF, SCR, and NOx-reduction system faults.

Call Now Request a Quote Create Service Ticket

System

Cummins Aftertreatment

Cummins ECM Service

Diagnostic Overview

Cummins fault code 3314 commonly points to a DEF system pressure, pump, or dosing fault. The ECM may detect that DEF pressure is not building, not holding, or not responding properly when dosing is commanded. Causes include a restricted DEF filter, failed DEF pump, frozen DEF, contaminated DEF, blocked DEF line, crystallized doser, poor power or ground, or wiring damage. Diagnosis should include DEF quality testing, pump pressure checks, filter inspection, line inspection, and an commanded DEF dosing test.

⏵ Truck down? Fleet stalled?

Fault Code 3314? Get An Honest Diagnosis.

Send us your fault codes and operational context. Same-day quote, remote diagnostic available, ship-in service nationwide.

Create Service Ticket

Internal Linking

Related Aftertreatment Fault Codes

View All Aftertreatment Codes

555

Cummins fault code 555 is commonly associated with high crankcase pressure or excessive engine blow-by.

1881

Cummins fault code 1881 commonly points to an aftertreatment DPF differential pressure sensor circuit problem, often a low-voltage, open-circuit, or signal issue.

1887

Cummins fault code 1887 is typically related to DPF differential pressure, soot loading, or regeneration performance.

1977

Cummins fault code 1977 is generally tied to aftertreatment regeneration performance or DPF restriction.

2639

Cummins fault code 2639 commonly relates to aftertreatment DPF differential pressure being above the expected range.

2771

Cummins fault code 2771 is commonly associated with SCR aftertreatment performance, DEF dosing, or NOx reduction issues.

View All Aftertreatment Codes →