DEF Tank Heater Circuit Open
What does DD-3058-5 mean?
The DD-3058-5 (Detroit Diesel DD Series) diesel fault code means: DEF Tank Heater Circuit Open. This is a moderate severity code.
Common Symptoms
- Check Engine Light / Amber Warning Lamp illuminated
- DEF frozen below 12F
- DEF lamp in winter
Probable Causes (Ranked by Likelihood)
- Failed DEF tank heater element Very Likely
- Harness break at tank connector Likely
- ACM heater driver failure Possible
Step-by-Step Diagnostic Procedure
Measure heater resistance at tank connector — spec is ~0.8-1.5 ohms.
Inspect ground wire from heater to chassis for corrosion.
If element reads open, replace DEF tank header (contains heater + level sensor).
Frequently Asked Questions
What is Detroit Diesel fault code DD-3058-5?
Detroit Diesel fault DD-3058-5 (SPN 3058 FMI 5) indicates: DEF Tank Heater Circuit Open. 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-3058-5?
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-3058-5?
Typical 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.