Volvo D13 SPN 3055 FMI 14 �?DPF Condition (Parked Regeneration Required)

Code Details

Plain-English Meaning

The Volvo D13 normally regenerates the DPF during highway driving without driver action. When driving conditions �?city traffic, short trips, mountain grades that require frequent braking �?prevent adequate driving regens, soot accumulates until the system requires a parked regen to complete the burn-off. SPN 3055 FMI 14 is the formal notification that this parked regen is needed. Ignoring it will trigger a derate escalation. On Volvo VNL, VNX, and VHD trucks with the D13, the DPF regen inhibit reason is displayed in VCADS Pro alongside the active fault code. Common inhibit reasons on the D13 include: exhaust temperature below threshold, vehicle speed below limit, or a companion aftertreatment fault that must be resolved before regen is permitted. In cold weather, the D13 exhaust temperature may not reach the regen threshold during short urban drive cycles, which is a normal system behavior and not an indication of a fault in the aftertreatment system itself.

SPN 3055 FMI 14 is DPF Condition �?parked regen required. On Volvo D13 with the UECU aftertreatment controller, VCADS Pro displays current DPF soot load, regen history, and can force a parked regen. The D13's aftertreatment system uses exhaust pressure differential to calculate soot load and triggers the parked regen request when driving regen cannot maintain the DPF below the soot threshold.

Common Symptoms

• DPF regen required warning on the Volvo instrument cluster
• Possible speed or power limitation if the request is not addressed
• Associated city driving or low-speed operation history

Possible Causes

Possible causes may include the items below. The list is not a parts diagnosis.

• Prolonged city, low-speed, or stop-and-go driving preventing driving regen
• Repeated driver inhibition of regen requests
• Consecutive short trips without highway temperature operation
• DPF differential pressure sensor fault (soot load calculation error)

First Checks

• Follow the Volvo driver display instructions to perform a parked regen in a safe, open outdoor area
• Connect VCADS Pro to monitor DPF soot load and regen progress
• After completion, verify in VCADS Pro that soot load returned to normal
• Check DPF pressure differential sensor reading if soot load appears inconsistent with driving history
• Connect VCADS Pro and identify the specific regen inhibit reason for SPN 3055 FMI 14
• For cold weather operation, allow adequate warm-up time to reach the exhaust temperature threshold before regen can initiate

Can I Keep Driving?

Driveable but derate severity increases if the parked regen is not completed. Address promptly.

Related Lookup Pages

• FMI 14 explanation
• Aftertreatment fault codes
• Search this code