Volvo SPN 3516 FMI 5: Meaning, Causes & Fix
Crankcase Filter Restriction — open circuit detected in crankcase ventilation filter pressure sensor per Volvo EPA 2013 GHG Phase 1 compliance
Reviewed by Diesel Mechanic Writers · Last updated August 04, 2026
Quick Answer
SPN 3516 FMI 5 = Crankcase Filter Restriction Sensor
Severity: 🟡 CHECK AT NEXT STOP · System: Crankcase Ventilation Filter / CCV Pressure Sensor · ⚠️ Drive to next stop
Diagnostic Reference
| Field | Details |
|---|---|
| Code | SPN 3516 FMI 5 |
| Protocol | J1939 SPN: 3516 FMI: 5 |
| Component | Crankcase Ventilation Filter / CCV Pressure Sensor |
| Manufacturer | Volvo |
| Engine Series | D13 |
| Severity | |
| SAE Reference | SAE J1939-73 Digital Annex — SPN 3516, FMI 5 |
Possible Causes
- CCV filter element saturated with oil sludge blocking sensor tube port (common at 300,000+ miles on D13)
- Pressure sensor connector corroded from oil exposure in engine valley
- Sensor signal wire broken at firewall pass-through grommet
- CCV filter housing cracked causing sensor mounting instability
- Sensor internal thermistor failure from prolonged oil vapor exposure
Top Causes Ranked by Frequency
- Corroded or loose sensor connector pins (35% of sensor/electrical faults)
- Wiring harness chafing causing intermittent open or short circuits (25%)
- Failed sensor providing out-of-range signal to ECM (20%)
- ECM 5V reference circuit overload from multiple sensor failures (10%)
- CAN bus communication fault from terminating resistor or module failure (10%)
In-Depth Diagnostic Procedure
Follow these diagnostic steps to identify the root cause of SPN 3516 FMI 5 on your Volvo D13. A J1939-compatible diagnostic scan tool is recommended.
- Connect scan tool and retrieve all active and inactive fault codes, noting which modules are reporting communication errors
- Check battery voltage and ground connections — low system voltage (below 11V) or poor grounds cause erratic sensor readings and communication faults
- Backprobe the suspect sensor connector and measure reference voltage (typically 5V), signal voltage, and ground with a digital multimeter — compare readings to OEM specifications
- Inspect wiring harness for chafing, especially at common failure points: engine pass-through connectors, valve cover gasket connectors, and frame rail routing near sharp edges
- Perform wiggle test on the harness while monitoring live data — intermittent connections will cause sensor readings to spike or drop when the harness is moved
- If CAN bus faults are present, check terminating resistors (should measure 60 ohms across CAN high and CAN low with the key off and batteries disconnected)
Repair & Cost Estimate
| Item | Cost Range |
|---|---|
| Parts | $150 – $1,200 |
| Labor | 2–6 hours @ ~$150/hr = $300 – $900 |
| Estimated Total | $450 – $2,100 |
Sensor replacement or harness repair. Prices vary by location and dealer.
Frequently Asked Questions — Crankcase Ventilation Filter / CCV Pressure Sensor
How do I know if a sensor is bad or if the wiring is the problem?
Backprobe the sensor connector and measure reference voltage, signal, and ground. If the 5V reference is present and ground is good, but the signal is out of range, the sensor is likely bad. If reference voltage is missing or unstable, the problem is in the wiring or ECM. A wiggle test on the harness while monitoring live data will reveal intermittent connections.
Can I drive with a faulty sensor?
It depends on the sensor. Non-critical sensors (barometric pressure, fuel temperature) typically trigger CHECK SOON codes and the engine runs on a default value. Critical sensors (accelerator pedal, crankshaft position) can cause stalling or no-start conditions. If the engine runs normally despite the code, you can usually drive to a repair facility, but do not ignore the code indefinitely.
What causes CAN bus communication faults?
CAN bus faults are caused by wiring damage (chafed or cut wires), corroded connectors, failed terminating resistors, or a faulty module that corrupts bus communication. Heavy-duty trucks use J1939 CAN which requires 120-ohm terminating resistors at each end of the bus. Measuring 60 ohms across CAN high and CAN low (with power off) confirms the bus is intact.
How much does an ECM replacement cost?
A new ECM for a heavy-duty diesel engine costs $1,500–$4,000 for the part alone, plus 3–6 hours of labor for installation, programming, and parameter setup. Remanufactured ECMs are available for $800–$2,000. Always verify the ECM is truly faulty before replacing — many ECM codes are caused by wiring or sensor issues, not the ECM itself.
Why do sensor faults seem to happen more in wet weather?
Moisture ingress into sensor connectors causes corrosion and intermittent electrical contact. This is especially common at the engine harness pass-through connector (where wires enter the valve cover) and at under-hood sensor connectors that are not properly sealed. Dielectric grease on connector pins and OEM-rated weatherpack connectors help prevent moisture-related faults.
Diagnostic & Repair Procedure
- Step 1: Inspect CCV filter element: remove from housing and check for oil saturation
- Step 2: Check sensor connector pins for oil contamination — clean with electrical contact cleaner
- Step 3: Measure sensor resistance: should be 500-700 ohms at 20°C
- Step 4: Pressure-test CCV system: crankcase pressure should be 0-2 kPa at idle
- Step 5: Trace sensor wiring from engine valley to ECM for breaks or oil soaking
Frequently Asked Questions
How far can I drive with this code?
This CHECK AT NEXT STOP code allows continued operation to a safe service location, typically within 50–100 miles. Reduce engine load (avoid steep grades, reduce cruising speed) and monitor related gauges closely. If secondary symptoms develop — smoke, unusual noise, temperature spike — pull over immediately.
Will this cause permanent engine damage if I keep driving?
If addressed promptly at the next stop, permanent damage is unlikely. However, prolonged operation (200+ miles) with this fault active can escalate the issue. For example, DEF system faults will eventually trigger a full derate and speed limitation to 5 mph. Some CHECK NEXT STOP conditions degrade into STOP ENGINE faults if the root cause worsens — do not postpone service indefinitely.
Can I diagnose this myself or do I need a mechanic?
You can attempt the diagnostic steps listed above. Many CHECK NEXT STOP codes have straightforward causes — low fluid levels, clogged filters, or loose connectors — that an owner-operator can address. However, if the code returns after clearing, the underlying fault requires professional diagnosis with a scan tool capable of viewing live data and freeze-frame information.
Estimated Repair Cost
Typical repair: $200–1,500 (Parts: $150–1,000 + Labor: 1–4 hours) · Costs vary by make/model and location
Related Fault Codes — D13
SPN 4364 FMI 18
🔴 STOP ENGINE
SPN 4375 FMI 7
SPN 174 FMI 0
SPN 3031 FMI 9
🟠 CHECK SOON
MID 128 PSID 90 FMI 4
🟠 CHECK SOON
SPN 107 FMI 16
🟠 CHECK SOON
Related Codes Across Systems
Codes from the same SPN range, manufacturer, or system that may also be relevant:
SPN 3556 FMI 0
SPN 3556 FMI 5
🟠 CHECK SOON
SPN 3556 FMI 5
🟠 CHECK SOON
SPN 102 FMI 1
SPN 174 FMI 3
SPN 1322 FMI 31
MID 128 SID 1 FMI 5
SPN 107 FMI 16
🟠 CHECK SOON
SPN 1077 FMI 14
🔴 STOP ENGINE
Associated Symptoms
References & Further Reading
- SAE J1939-73: Application Layer — Diagnostics. SAE International. Defines SPN 3516 / FMI 5 fault code semantics for heavy-duty CAN networks. SAE J1939 Standard
- Volvo D13 Service Manual: OEM diagnostic procedures for Crankcase Ventilation Filter / CCV Pressure Sensor faults. Consult the official Volvo service documentation for your specific engine serial number.
- TMC RP 1210: Recommended Practice for Windows-Based Vehicle Diagnostic Interface. Technology & Maintenance Council (TMC) of American Trucking Associations.