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2024 HONDA ACCORD
1.5L I4 Turbo•FWD•CVT•gas•turbo
3 active safety recalls on this vehicle — view recalls
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Repairs402Labor489Torque3331Fluid7DTC1926Battery1Maintenance0Recalls3
P0851moderate severityPowertrain

Park/Neutral Switch Input Circuit Low

on 2024 Honda Accord 1.5L I4 Turbo · FWD

What this code means

The PCM sees a low voltage input from the park/neutral position switch. This may affect starting and gear-related engine functions.

Symptoms

  • No-start in Park or Neutral
  • Incorrect gear display
  • Backup lights inoperative

Common causes

  • Faulty park/neutral switch
  • Short to ground in circuit
  • Loose or corroded connector
  • Failed transmission range sensor

Diagnostic steps

  1. Retrieve codes and check freeze frame
  2. Inspect PNP switch wiring for shorts
  3. Test switch continuity across gear positions
  4. Replace faulty switch or sensor
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Other Powertrain codes on this vehicle

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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