Free API
Back to 2018 Ford F-150
Help
2018 FORD F-150
3.5L V6 EcoBoost•RWD•AUTOMATIC•gas•turbo
19 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs418Labor1009Torque7006Fluid18DTC3210Battery2Maintenance0Recalls19
P0371moderate severityPowertrain

Timing Reference High Resolution Signal A Too Many Pulses

on 2018 Ford F-150 3.5L V6 EcoBoost · RWD

What this code means

The PCM received more high resolution timing pulses than expected on signal A. This often indicates electrical noise or a damaged tone ring.

Symptoms

  • Check engine light on
  • Rough running
  • Timing-related performance issues

Common causes

  • Damaged reluctor/tone ring
  • Electrical interference or noise
  • Faulty timing sensor
  • Wiring fault

Diagnostic steps

  1. Scan for codes and freeze frame
  2. Inspect tone ring for damage or debris
  3. Check wiring for noise sources
  4. Test and replace sensor if needed
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITE
Shop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Powertrain codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2018 Ford F-150 repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Ford F-150 — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →