P2124 code meaning
Throttle/Pedal Position Sensor/Switch D Circuit Intermittent
Powertrain system Generic code P21xx codes Check engine light
What P2124 means
P2124 covers brief dropouts or spikes on pedal track D that come and go too quickly to count as a steady low or high fault. Ford documents it: special service messages 46829 (2015-2017 F-150) and 46880 (2017 Super Duty built up to late August 2017) tie P2124, alongside other pedal codes and wrench, ABS, airbag and hill descent lamps, to a pedal harness routed behind the bracket between brake booster and brake pedal, where it gets pinched and damaged. GM publishes no separate intermittent code for track D and catches such glitches through the 19-of-39 counter of P2120, P2122 and P2123. Inspect the harness while moving the pedal slowly. Effects range from a passing warning lamp to sudden loss of pedal response.
P2124 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2124
- Warning lamps that come and go, sometimes several at once
- Brief loss of pedal response while driving
- Reduced power mode after repeated dropouts
Common causes of P2124
- Most likelyPedal harness pinched or chafed by a misrouted path
- PossibleLoose terminal or weak pin tension at the pedal connector
- PossibleWorn spot on track D inside the pedal sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Accelerator pedal position sensorPedal sensor wiringECM
What each part of P2124 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 24 | The exact fault in that area. |
What to do next
- Note P2124 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2124
What does P2124 mean?
P2124 means "Throttle/Pedal Position Sensor/Switch D Circuit Intermittent". P2124 covers brief dropouts or spikes on pedal track D that come and go too quickly to count as a steady low or high fault. It is a generic code, so it means the same on every make.
Is it safe to drive with P2124?
Drive gently and only to a workshop. With P2124 the car can go into limp mode (reduced power) to protect itself.
Will P2124 fail an emissions test?
Yes, it can. P2124 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2124 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2124 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.