P107B On Toyota and Lexus hybrids, fuel rail pressure sensor B reads out of range

Fuel rail pressure sensor B circuit range/performance

Severity not verified — if the car runs badly, have it inspected

The Toyota and Lexus bulletins say only that the check engine light comes on with this code; they do not rate how safe it is to drive.

It gets more serious if:

  • Inspect soon: Get it inspected soon if the engine stalls, runs rough or loses power.

Source: how we rate severity

P107B in short

On the 2018 to 2020 Toyota Highlander Hybrid and Lexus RX 450h, P107B means fuel rail pressure sensor B reports a range or performance problem. Both makers published a bulletin that replaces the fuel pump assembly. It is not rated as urgent, but a dealer should check your VIN.

The engine computer watches fuel rail pressure through sensors. P107B is set for sensor B when its circuit or reading falls outside the expected range.

Toyota bulletin T-SB-0050-20 (2018 to 2019 Highlander Hybrid) and Lexus L-SB-0022-20 (2018 to 2020 RX 450h and 450hL) say the check engine light can come on with P107B, and replace the fuel pump assembly, per Mitchell 1 summaries.

This page speaks only for those Toyota and Lexus hybrids; other makers use P107B differently.

Pick your make

P107B is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Fuel pump assembly (bulletin repair)

    Supported by vehicle data
    Why it ranks here
    Toyota and Lexus bulletins prescribe replacing the fuel pump assembly and tube set for P107B on the listed hybrids, though whether the bulletins are current is not verified.
    What would change this
    Rises if your VIN is covered and a dealer confirms the code and pressure reading. Falls if your car is outside the listed models.
    How to test the fuel pump

  2. Rail pressure sensor B wiring or connector fault

    Possible — needs testing
    Why it ranks here
    General rail-pressure-sensor circuit faults can set a range code, but no source we read ties them to P107B here.
    What would change this
    Rises if wiring is damaged or the connector is loose. Falls if the sensor signal is steady.
    How to test the fuel rail pressure sensor

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Ask a Toyota or Lexus dealer whether T-SB-0050-20 or L-SB-0022-20 applies to your VIN.

    Low risk

  2. Have the fuel rail pressure sensor B signal and connector checked against the service information.

    Best left to a shopTool: scan tool, multimeter

    Warning:The fuel system is under high pressure. Let a shop do it.

Symptoms

  • Check engine light
  • Rough running or poor power in some cases

How to fix

  1. Ask a dealer whether T-SB-0050-20 or L-SB-0022-20 applies to your VIN before paying for fuel parts.

Parts and cost context

  • Fuel pump:Bulletin parts are a pump assembly and tube set. Labour varies; get a quote.
  • Fuel rail pressure sensor:The sensor itself is not the bulletin repair.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Toyota

  • 2018–2019 · Highlander

    Supported by vehicle data

    Toyota bulletin T-SB-0050-20 replaces the fuel pump assembly on 2018 to 2019 Highlander Hybrid with P107B. Not verified as current.

  • T-SB-0050-20Status unverified

    MIL on with P107B, fuel rail pressure sensor B circuit range/performance

    2018–2019highlander · issued · NHTSA 10176696

    Replace the fuel pump assembly and the tube set on affected Highlander Hybrid vehicles with the light on and P107B stored (parts 77020-48260/48261 and 77169-33030 per the Mitchell 1 summary).

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Lexus

  • 2018–2020 · RX

    Supported by vehicle data

    Lexus bulletin L-SB-0022-20 replaces the fuel pump assembly on 2018 to 2020 RX 450h and RX 450hL with P107B. Not verified as current.

  • L-SB-0022-20Status unverified

    MIL on with P107B, fuel rail pressure sensor B circuit range/performance

    2018–2020rx · issued · NHTSA 10176707

    Same repair for the RX 450h and RX 450hL: replace the fuel pump assembly (parts 77020-48260/48261).

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

No curated relationships for P107B yet.

All Fuel pump and injectors codes

P107B questions

Does P107B always mean a new fuel pump?

Only on the Toyota and Lexus hybrids named in the bulletins. On those, the bulletin repair is a fuel pump assembly, but a dealer should confirm for your VIN.

Sources and review

  1. Toyota T-SB-0050-20: MIL on with P107B, fuel rail pressure sensor B circuit range/performance — NHTSA manufacturer communications ,
  2. Mitchell 1: correcting Toyota fuel pump condition (T-SB-0050-20) — Vehicle Service Pros
  3. Mitchell 1: Lexus fuel pump (L-SB-0022-20) — Vehicle Service Pros
  4. Lexus L-SB-0022-20: MIL on with P107B, fuel rail pressure sensor B circuit range/performance — NHTSA manufacturer communications ,
Last reviewed
Written by
Saurabh K.
Editorial review
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Technician review
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