P1891 — GM: Throttle Position Sensor PWM Signal Low

Code breakdown

Manufacturer-specific meanings (GM)

• Fiat
  Ritorno a massa piastra di contatto scatola di rinvio circuito aperto
• BuickCadillacChevroletGMGMCOldsmobileSaturn
  Throttle Position Sensor PWM Signal Low
• FordLincolnMercury
  Transmission Transfer Case Contact Plate Ground Return Open Circuit

Related codes

• P1800 — Manufacturer-specific fault code
• P1800-buick — TCM Power Control Relay Circuit Open
• P1800-cadillac — TCM Power Control Relay Circuit Open
• P1800-chevrolet — TCM Power Control Relay Circuit Open
• P1800-gm — TCM Power Control Relay Circuit Open
• P1800-gmc — TCM Power Control Relay Circuit Open

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