P212F code meaning
Throttle/Pedal Position Sensor/Switch F/G Voltage Correlation
Powertrain system Generic code P21xx codes Check engine light
What P212F means
P212F checks whether the two redundant signals F and G still agree in voltage. No manufacturer documents this code publicly, and the letters make it an unusual pair: GM's 2004-2005 truck tables use F for the third accelerator pedal track, while GM's 2023 table assigns G to the second sensor of a bank 2 throttle body. A meaningful F/G comparison therefore needs a layout where both letters sit on the same component, for example a second throttle body with two tracks. Comparable checks are documented under P2135 and P2138, where GM and Ford store a fault when two tracks differ by a few percent or degrees. A drifting track, contact resistance or a shared ground fault are the plausible causes; the ECU then limits power.
P212F 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 P212F
- Engine or throttle warning lamp on
- Reduced power or limp mode
- Hesitant response to the pedal
Common causes of P212F
- Most likelyOne sensor track worn or drifted so the pair disagrees
- PossibleContact resistance in the connector shifting one signal
- PossibleFault in a shared ground or 5 V reference line
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Throttle position sensorAccelerator pedal position sensor
What each part of P212F 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. |
| 2F | The exact fault in that area. |
What to do next
- Note P212F 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 P212F
What does P212F mean?
P212F means "Throttle/Pedal Position Sensor/Switch F/G Voltage Correlation". P212F checks whether the two redundant signals F and G still agree in voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P212F?
Drive gently and only to a workshop. With P212F the car can go into limp mode (reduced power) to protect itself.
Will P212F fail an emissions test?
Yes, it can. P212F 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 P212F 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 P212F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.