P26FFAuto Configuration Throttle Input Not Present (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Check engine light on
- Reduced engine power or limp mode
- Poor throttle response or rough idle
- Likely causes
- LikelyBank 2 throttle body connector unplugged or not fully seated
- PossibleOpen signal, reference or ground wire to the bank 2 throttle position sensor
- RareEngine controller programmed or replaced with software for a different engine variant
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.