C1345 Brake linear solenoid valve offset learning not done (Toyota)

Linear solenoid valve offset learning undone

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

The sources define the code but do not rate drive safety. It is a brake system code on Toyota hybrids, which is safety-critical.

Safety-critical system: explanation only, no DIY steps. Source: how we rate severity

C1345 in short

On Toyota hybrids, C1345 means the brake computer has no stored calibration for the linear solenoid valves in the brake actuator. Toyota says it is cleared by running the valve initialization and calibration. If it returns, the actuator is replaced. Have it done by a qualified shop.

Toyota hybrid brakes use a brake actuator with linear solenoid valves. The skid control computer learns how each valve differs from the standard and stores it. C1345 means that learned value is missing for one or more wheels.

Toyota's repair manual says the learning has to be repeated when the stroke sensor, actuator solenoids or stroke simulator solenoid are replaced. Its steps are to run the initialization and calibration, clear the codes, recheck, and replace the brake actuator if the code stays.

Owners of 2007-2008 Highlander Hybrids and a 2014 Prius Plug-in report C1345 with other brake codes and a costly actuator replacement. The actuator work should be left to a qualified shop.

Pick your make

C1345 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. Valve calibration not stored after brake work or low battery

    Supported by vehicle data
    Why it ranks here
    Toyota names the missing calibration as the trouble area and says it is needed after the stroke sensor or actuator solenoids are replaced.
    What would change this
    Rises after recent brake actuator work or a battery fault. Falls if the code returns right after a successful calibration.

  2. Brake actuator assembly

    Supported by vehicle data
    Why it ranks here
    Toyota's procedure ends with replacing the actuator if the code stays, and owners report the actuator replaced.
    What would change this
    Rises if the code returns after calibration. Falls if calibration clears it.

  3. Skid control computer or its wiring

    Possible — needs testing
    Why it ranks here
    The related Toyota code C1368 lists the skid control computer as a trouble area; it is not named for C1345 itself.
    What would change this
    Rises if wiring or supply faults are found. Falls if calibration clears the code.
    How to test the brake system control module (abs module)

What to test first

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

  1. Have a scan tool read all brake codes. Note whether C1368 or other brake actuator codes are stored with C1345.

    Low riskTool: Toyota-capable scan tool

    • IfC1345 alone, after brake work or a battery fault

      It meansThe calibration may simply be missing.

      Go to step 2

    • IfC1345 with C1368 or other actuator codes

      It meansThe actuator itself is more likely at fault.

      Go to step 2

  2. Have a technician run the linear solenoid valve initialization and calibration with the 12 V battery in good condition, clear the codes and recheck.

    Best left to a shopTool: Toyota-capable scan tool

    Warning:This is brake system work. The calibration needs the car stationary with the brake pedal untouched, and the actuator holds high pressure. Leave it to a qualified technician.

Symptoms

  • ABS, brake and stability warning lights on
  • Brake system warning on a hybrid

How to fix

This is a safety-critical system, so we explain the code but don't give repair steps. Have it inspected by a qualified technician.

Parts and cost context

  • Brake actuator assembly:Replaced when calibration does not clear the code. Labor varies; get a quote.

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

Compare used part prices on PartPriceGuide

On your vehicle

Toyota

  • 2006–2008 · Highlander

    Supported by vehicle data

    Highlander Hybrid owners report C1345 with other brake codes and an actuator replacement. We found no Toyota bulletin naming it in our extract.

  • 2013–2014 · Prius

    Supported by vehicle data

    Prius-family owners report the code with a brake actuator replacement.

No curated relationships for C1345 yet.

All ABS, traction and stability control codes

C1345 questions

Does C1345 always mean a new brake actuator?

No. Toyota says to run the valve calibration first and replace the actuator only if the code stays.

Sources and review

  1. Brake Control, Electronically Controlled Brake System: DTC C1345/66 and C1368/67 (Toyota repair manual excerpt) — Toyota Motor Corporation (repair manual page, hosted on PriusChat)
  2. NHTSA complaints ODI 10760137, 11004974 and 11544196 (Toyota hybrids) — NHTSA ODI
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

My Car

Pick your car and code pages will point out notes and bulletins for it. Saved only in this browser.

Fill this in from your VIN

Used once to identify your engine; not stored.