ScanFixAI
FeaturesPricingDTC CodesCompareDownload
Home › DTC Codes › P0123

P0123 — TPS Circuit High Input

Throttle position sensor voltage above maximum.

Severity: HighRepair: $50-$400Difficulty: Medium

Don't guess — diagnose P0123 the right way

ScanFixAI reads every module, finds the real root cause, and tells you exactly what to check.

Download ScanFixAI Free

Common symptoms of P0123

Common causes of P0123

Repair cost & difficulty

Typical cost to fix P0123: $50-$400 · Difficulty: Medium

Pro tip: Safety concern — a TPS reading high can cause unintended acceleration on some systems.

Vehicles commonly affected

All makes

Related trouble codes

P0120P0121P0122

© 2026 ScanFixAI · AI-powered car diagnostics. All trouble codes · Home · Compare

ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.