P0124: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

Severity

Medium

System

Fuel and Air Metering

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P0124 Mean?

P0124 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent. This code relates to the fuel and air metering system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0124

⚠️ Check Engine Light (MIL) illuminated
⚠️ Throttle/Pedal Position Sensor/Switch A signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Poor fuel economy

Common Causes

🔍 Loose or intermittent connection at Throttle/Pedal Position Sensor/Switch A
🔍 Wire chafing causing intermittent contact
🔍 Throttle/Pedal Position Sensor/Switch A failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P0124 mean?

P0124 indicates: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent. The vehicle's computer has detected that the Throttle/Pedal Position Sensor/Switch A is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P0124?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P0124 for extended periods may cause additional problems.

How much does it cost to fix P0124?

Repair costs for P0124 typically range from $30 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and reseat all Throttle/Pedal Position Sensor/Switch A connectors
🔧 Repair chafed or damaged wiring in Throttle/Pedal Position Sensor/Switch A circuit
🔧 Replace Throttle/Pedal Position Sensor/Switch A if failing intermittently

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

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