EV Diagnostics
Source-backed diagnostic reference

P1633 EV diagnostic code

Throttle Valve Adaptation Limp Home Position

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • BMW: Throttle Valve Adaptation Limp Home Position Source
  • BUICK: Ignition Supply Power Circuit Low Voltage Source
  • CADILLAC: Ignition Supply Power Circuit Low Voltage Source
  • CHEVY: Ignition Supply Power Circuit Low Voltage Source
  • GM: Ignition Supply Power Circuit Low Voltage Source
  • GMC: Ignition Supply Power Circuit Low Voltage Source
  • KIA: Battery Overcharge Source
  • LEXUS: ECM Malfunction ETCS Circuit Source
  • MAZDA: Battery Overcharge Fault Source
  • OLDSMOBILE: Ignition Supply Power Circuit Low Voltage Source
  • OTHER: KAM Voltage Too Low Source
  • SATURN: Ignition Supply Power Circuit Low Voltage Source
  • TOYOTA: ECM Source
  • VOLKSWAGEN: Accelerator Pedal Position Sensor 2 Signal Too Low Source

Search and canonical URL

Capitalization, underscores, hyphens, colons and spaces are normalized to this canonical code identity so alternate scan-tool formats do not create duplicate pages.