Free API
Help
1998 LEXUS LS 400
4.0L V8•RWD•AUTOMATIC•gas
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor481Torque2133Fluid8DTC1663Battery1Maintenance0Recalls0
P0255high severityPowertrain

Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)

on 1998 Lexus LS 400 4.0L V8 · RWD

What this code means

The PCM detected an intermittent fault in the diesel injection pump fuel metering control 'B' circuit. Symptoms may come and go with wiring or connection issues.

Symptoms

  • Intermittent stalling
  • Occasional power loss
  • Check engine light flickers

Common causes

  • Loose or corroded connector
  • Intermittent wiring fault
  • Faulty metering control valve
  • Injection pump fault

Diagnostic steps

  1. Scan for intermittent codes
  2. Wiggle-test wiring and connectors
  3. Inspect metering valve circuit
  4. Monitor live data during test drive
🔌 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 1998 Lexus LS 400 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 Lexus LS 400 — $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 →