Engine Coolant Temperature — Data Valid But Above Normal (Moderately Severe)
The VOLVO-MACK-SPN110-FMI16 (Volvo/Mack D/MP Series) diesel fault code means: Engine Coolant Temperature — Data Valid But Above Normal (Moderately Severe). This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- intermediate
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What Are the Symptoms of VOLVO-MACK-SPN110-FMI16?
- Check Engine or an aftertreatment warning light
- A Engine Coolant Temperature reading outside its normal range on the diagnostic software
- Possible derate depending on severity level
What Causes VOLVO-MACK-SPN110-FMI16? (Most Likely First)
- The condition the Engine Coolant Temperature parameter measures is genuinely out of range High
- Sensor reading wrong (sensor or wiring) Medium
- A related system fault driving the value out of range Medium
Can I Still Drive with VOLVO-MACK-SPN110-FMI16?
Short distances only. VOLVO-MACK-SPN110-FMI16 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does SPN 110 FMI 16 mean?
SPN 110 is "Engine Coolant Temperature" in the SAE J1939 Digital Annex, and FMI 16 means the measured value is above its normal operating range at the moderately severe level. Together they say the measured value is above its normal operating range at the moderately severe level for that parameter.
Is this a Volvo / Mack-specific code?
No. It is a standard J1939 SPN and FMI pair, so the parameter and failure mode mean the same on any J1939 engine. What Volvo / Mack checks before setting it, and what the truck does about it, is in Volvo / Mack service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose VOLVO-MACK-SPN110-FMI16?
Read the live Engine Coolant Temperature value and compare it with the expected range for the operating condition.
Compare it with related sensors to decide whether the condition is real or the sensor is wrong.
Follow the manufacturer's procedure for the pair before replacing parts.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SPN 110 record in the ISOBUS Data Dictionary (ISO 11783 online database), reproducing the SAE heavy-duty Digital Annex (DA) name "Engine Coolant Temperature". Establishes what the SPN names, not what a Volvo / Mack display shows for it.ISO 11783 online database copy of the SAE J1939 Digital Annex SPN list — readable, not SAE’s current edition
- SAE J1939-73Application Layer: Diagnostics (defines the SPN/FMI fault-identifier framework)
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