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Home / DTC / P1250 — Lack of Power to FPRC Solenoid

P1250 — Lack of Power to FPRC Solenoid

Detailed page for trouble code P1250.

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Code

P1250

LINCOLN P — Powertrain

Lack of Power to FPRC Solenoid

Brand: LINCOLN
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or defective relay supplying the FPRC circuit
  • Open or shorted wiring between fuse/relay/PCM and FPRC solenoid
  • Corroded or loose connector at the FPRC solenoid
  • High resistance (voltage drop) in supply or ground circuit
  • Failed FPRC solenoid (internal open or short)
  • Poor battery/charging system voltage

Symptoms

  • Check Engine Light (MIL) illuminated
  • Reduced engine power or limp-home mode
  • Poor acceleration, hesitation or stumble under load
  • Hard starting or extended cranking if fuel pressure is insufficient
  • Stored P1250 (may be accompanied by fuel pressure-related codes)

What to check

  • Read and record freeze frame and any additional stored DTCs with a scan tool
  • Verify battery voltage and charging system condition (key ON, engine OFF and running)
  • Inspect related fuses and relays for the FPRC/fuel control circuit
  • Visually inspect wiring and connectors at the FPRC solenoid for corrosion, damage, or loose pins
  • Backprobe solenoid connector with key ON to verify supply voltage and switching/ground signal
  • Measure solenoid resistance (remove connector) and compare to specification

Signal parameters

  • Expected supply voltage at solenoid fuse: ~11–14 V (key ON, engine OFF) — may be fused or ignition-switched
  • Switching output: PCM may switch ground or power; backprobe to observe ~0 V (ground) or pulsed duty cycle up to full battery voltage depending on control strategy
  • Typical solenoid coil resistance (varies by model): commonly in the range of ~5–50 ohms. Consult vehicle-specific service data for exact value
  • Voltage drop acceptable range: low millivolt drop across good grounds; supply-side voltage drop should be minimal (
  • Duty cycle (if pulse-width modulated): 0–100% depending on commanded fuel pressure — verify with manufacturer-specific data

Diagnostic algorithm

  1. Connect a scan tool, read DTCs and freeze frame. Note engine conditions when code set (rpm, load, temp).
  2. Inspect visible wiring, connectors, and fuse/relay for the FPRC circuit. Repair obvious damage or corrosion.
  3. Verify battery voltage (key ON/engine OFF and engine running). Replace or charge battery if low.
  4. Check relevant fuse(s) and relay(s). Replace any blown fuse and retest. Verify relay function if used.
  5. With connector attached, backprobe the solenoid supply and control pins. With key ON, verify supply voltage present. Operate PCM command (using scan tool active tests) and observe switching/ground or PWM signal.
  6. With connector disconnected, measure solenoid coil resistance and compare to spec. If open or shorted, replace the solenoid.
  7. If supply voltage missing, trace and test continuity from fuse/relay to solenoid connector. Repair open or short circuits and retest.
  8. If control signal missing but wiring to PCM is good, test continuity from solenoid control pin to PCM. If open/short not present and wiring good, suspect PCM driver failure — consult factory procedures before replacing PCM.
  9. After repairs, clear codes, perform a functional test and road test under conditions similar to freeze frame to confirm the issue is resolved.
  10. If intermittent, perform wiggle/strain tests and consider installing a scope to capture transient faults during operation.

Likely causes

  • Blown fuse or bad relay supplying the solenoid
  • Broken/open wire or poor connector/terminal at the solenoid
  • Failed or internally open/shorted FPRC solenoid
  • High resistance/voltage drop in supply or ground
  • PCM driver fault (less common)

Fault status

⚠️ Status
P1250 (LINCOLN) — Lack of Power to FPRC Solenoid: PCM detected no/low power to the Fuel Pressure Regulator Control solenoid circuit. Inspect fuses/relays, wiring, connectors, solenoid, and PCM output.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 2.5 hours

Similar codes

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166

Browse 166 LINCOLN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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