DTC F00316 almost always points to a fuel supply restriction or faulty flow regulator , not the HP pump itself. Start with the fuel filter and low-pressure circuit before replacing expensive components.
The Renault fault code (often appearing alongside other system-specific codes) typically indicates a Computer Supply Voltage: Circuit Voltage Below Threshold . This means one or more of the vehicle's electronic control modules (ECUs) is receiving insufficient power to operate correctly. What This Code Means
If the battery has recently been replaced but F00316 returns, the alternator should be tested. At idle with electrical loads active (headlights, etc.), the charging voltage should read between . Readings below this range indicate insufficient charging. renault dtc f00316
Depending on which control module logs the fault, DTC F00316 most frequently target:
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| Repair Action | Parts Cost | Labor Cost (Independent Shop) | Total Estimate | | :--- | :--- | :--- | :--- | | Alternator regulator only | $30–$50 | $120–$180 | $150–$230 | | Complete alternator replacement | $200–$400 | $150–$250 | $350–$650 | | LIN wire repair | $5 (wire + solder) | $80–$150 | $85–$155 | | BMS sensor replacement | $40–$80 | $50–$80 | $90–$160 | | ECU software update (dealer) | $0 (if under warranty) or $100 | $100 | $100–$200 |
This is the #1 cause. If your battery is old or the charge level drops during startup, the EPS module (which consumes high current) may trigger this fault. This means one or more of the vehicle's
| Engine | Specifics | |--------|------------| | | Very sensitive to filter blockage. FQR failure common after 120k km. | | R9M 1.6 dCi | Also common; check low pressure pump relay and fuse. | | M9R 2.0 dCi | Rare; often misdiagnosed – check EGR first (F00316 can appear secondary). |