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OBD-II · Engine and powertrain (P)

P1656

Manufacturer-specific code

Meaning by manufacturer

This code means different things on different makes. Find yours below.

  • Toyota, Lexus

    OCV circuit malfunction (bank 1)

    The engine computer found an electrical fault in the oil control valve (OCV) circuit that operates the variable valve timing.

    Likely causes, most likely first

    1. 01Oil control valve coil open or short
    2. 02Damaged connector or wiring
    3. 03Engine computer fault (rare)

    Severity: Caution: get it checked soon · DIY with tools and some experience