Volvo & Mack Fault Codes
Volvo Group owns Mack Trucks and the two share engine architecture: Volvo D11 = Mack MP7, D13 = MP8, D16 = MP10. Both brands use the same J1939 SPN/FMI fault reporting and the same diagnostic software (Volvo Tech Tool / Mack Premium Tech Tool, branded as PTT/PTT+). Common failures cluster around the EGR cooler, DEF / SCR aftertreatment, and the fuel rail pressure sensor.
117 fault codes documented· 6 engine variants · J1939 SPN/FMI (Tech Tool / PTT) · 2007 - present
Most Common Volvo / Mack Fault Codes
Showing 24 of 117 Volvo / Mack codes, sorted by severity. Each links to causes, diagnostics, common fixes, and repair cost estimates.
VOLVO-MACK-MID128-PID100-FMI1 critical
Engine Oil Pressure Data Valid But Below Normal
VOLVO-MACK-MID128-PID110-FMI0 critical
Engine Coolant Temperature Data Valid But Above Normal (Most Severe)
VOLVO-MACK-MID128-PID190-FMI2 critical
Engine Crankshaft Speed Signal Erratic
VOLVO-MACK-MID128-PID190-FMI8 critical
Engine Crankshaft Speed Signal Abnormal Frequency
VOLVO-MACK-MID216-PID127-FMI14 critical
Transmission Oil Pressure Critical
VOLVO-MACK-MP8-CYLINDER-HEAD-CRACK critical
D13/MP8 Cylinder Head Crack — Coolant Loss, Combustion Leak
VOLVO-MACK-SPN100-FMI1 critical
Engine Oil Pressure Extremely Low (Shutdown)
VOLVO-MACK-SPN190-FMI0 critical
Engine Overspeed Above Normal
VOLVO-PENTA-100-1 critical
Engine Oil Pressure Below Safe Limit Shutdown
VOLVO-PENTA-110-0 critical
Coolant Temperature High Shutdown Triggered
VOLVO-PENTA-190-0 critical
Engine Overspeed Shutdown, ECM Cut Fuel
VOLVO-PENTA-BILGE-WATER-HIGH critical
Bilge Water Level High Alert Via EVC
VOLVO-PENTA-EXHAUST-TEMP-HIGH critical
Exhaust Gas Temperature Exceeded Safe Operating Limit
VOLVO-PENTA-SEAWATER-PUMP critical
Seawater Cooling Pump Failure Detected
VOLVO-MACK-DEF-DOSER-CRYSTALLIZATION serious
DEF Doser Injector Urea Crystallization Clog
VOLVO-MACK-DPF-REGEN-FAIL serious
DPF Forced Regen Failure — Derate Countdown Active
VOLVO-MACK-MID128-PID110-FMI16 serious
Coolant Temperature High (EGR Cooler Leak Suspected)
VOLVO-MACK-MID128-PID1569-FMI0 serious
Engine Fuel Rail Pressure Very High
VOLVO-MACK-MID128-PID1569-FMI1 serious
Engine Fuel Rail Pressure Very Low
VOLVO-MACK-MID128-PID1569-FMI2 serious
Engine Fuel Rail Pressure Erratic
VOLVO-MACK-MID128-PID2791-FMI5 serious
EGR Valve Position Control Circuit Open
VOLVO-MACK-MID128-PID2791-FMI6 serious
EGR Valve Position Control Circuit Shorted
VOLVO-MACK-MID128-PID2791-FMI7 serious
EGR Valve Not Responding to Command (Carbon Stuck)
VOLVO-MACK-MID128-PID3216-FMI12 serious
NOx Inlet Sensor Internal Fault
Volvo / Mack Engine Versions
| Engine | Years | Applications | Notes |
|---|---|---|---|
| Volvo D11 | 2007-present | Volvo VHD, VNL, VNR; regional and vocational | 10.8L I6. Same architecture as Mack MP7. Common Rail fuel system, EGR + SCR aftertreatment. |
| Volvo D13 | 2007-present | Volvo VNL, VNR, VAH; long-haul Class 8 | 12.8L I6 flagship. Most common Volvo on-highway engine. Shares architecture with Mack MP8. Volvo Engine Brake (VEB) standard. |
| Volvo D16 | 2007-present | Volvo VNX, vocational and heavy-haul | 16.1L I6. Highest-output Volvo. Same family as Mack MP10. Used in heavy-haul, logging, oilfield. |
| Mack MP7 | 2007-present | Mack Anthem, Pinnacle, Granite (regional / vocational) | 11L I6. Mack-badged D11 with PowerLeash engine brake. Common in dump, refuse, mixer. |
| Mack MP8 | 2007-present | Mack Anthem, Pinnacle (long-haul); Granite, TerraPro (vocational) | 13L I6. Mack-badged D13. The most common Mack on-highway engine. |
| Mack MP10 | 2010-present | Mack Pinnacle, TerraPro (heavy-haul, oilfield) | 16L I6. Mack-badged D16 for the heaviest applications. |
Common Volvo / Mack Issues
- EGR cooler internal leaks causing coolant loss and white exhaust steam
- NOx sensor (inlet and outlet) failures triggering SCR efficiency derate
- DEF dosing unit and pump faults -- Volvo / Mack PEMS-particular
- EGR differential pressure sensor and tube clogging
- Fuel rail pressure sensor and high-pressure pump wear on D13 / MP8
- VGT actuator sticking causing turbo response and boost pressure faults
- PTC (Powertrain Control) software calibration issues -- often resolved by Volvo Tech Tool reflash
- Aftertreatment harness chafing at the frame rail causing intermittent NOx faults