P26FF code meaning
Auto Configuration Throttle Input Not Present (Bank 2)
Powertrain system Generic code P26xx codes Check engine light
What P26FF means
Some engine controllers set themselves up at power-on by checking which inputs are connected, so one module can serve several engine layouts. On V engines with a separate throttle body for each cylinder bank this includes a throttle position signal per bank. P26FF means the controller expects a throttle input for bank 2 but finds none during this self-configuration; P063E is the same finding for bank 1. Unlike circuit codes such as P0222/P0223, which judge a signal that is present but wrong, this one says the input was not detected at all. No manufacturer documents P26FF publicly. CARB requires throttle position inputs to be checked for wiring faults and for plausibility. Typical causes are an unplugged throttle body, an open signal wire or software meant for another engine; expect a reduced-power mode.
P26FF at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P26FF
- Check engine light on
- Reduced engine power or limp mode
- Poor throttle response or rough idle
Common causes of P26FF
- Most likelyBank 2 throttle body connector unplugged or not fully seated
- PossibleOpen signal, reference or ground wire to the bank 2 throttle position sensor
- Less likelyEngine controller programmed or replaced with software for a different engine variant
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Throttle position sensor b2Control moduleWiring harness
What each part of P26FF means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| FF | The exact fault in that area. |
What to do next
- Note P26FF 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 P26FF
What does P26FF mean?
P26FF means "Auto Configuration Throttle Input Not Present (Bank 2)". Some engine controllers set themselves up at power-on by checking which inputs are connected, so one module can serve several engine layouts. It is a generic code, so it means the same on every make.
Is it safe to drive with P26FF?
Drive gently and only to a workshop. With P26FF the car can go into limp mode (reduced power) to protect itself.
Will P26FF fail an emissions test?
Yes, it can. P26FF 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 P26FF to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P26FF clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.