P26FF

Code

Generic P — Powertrain

Auto Configuration Throttle Input Not Present Bank 2

Brand: Generic

Type: P — Powertrain

Views: UK: 31 EN: 41 RU: 29

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Faulty throttle position sensor (TPS) or throttle body assembly on Bank 2
Open or short in the TPS/throttle wiring harness or connector
Corroded or loose connector pins at the throttle body or ECU
Blown fuse or lost reference voltage/ground for TPS circuitry
ECU software/configuration issue or corrupted calibration
CAN/vehicle network communication error (if throttle data is shared over network)

Read freeze frame and complete DTC list; note any related throttle/pedal or CAN communication codes
Visually inspect throttle body connector, wiring harness, and ECU connectors for damage, corrosion, or contamination
Check fuses and power distribution for circuits supplying the throttle/TPS
Check for proper ground(s) at the engine and sensor mounts
Verify whether vehicle has separate throttle components per bank (V engines) or shared sensor data over a network

Typical TPS reference voltage: 5.0 V (check factory spec)
TPS output voltage at closed throttle: ~0.5–1.0 V (varies by manufacturer)
TPS output voltage at wide-open throttle: ~3.5–4.5 V (varies by manufacturer)
Dual/sensor redundancy: two sensor channels should vary together; difference typically
CAN/serial messages: throttle position message present and updating (check with scanner)

Confirm the code and note related codes and freeze frame data.
Perform a visual inspection of Bank 2 throttle body, connector and wiring for damage, corrosion or water ingress.
With key on engine off, verify TPS reference voltage (nominal 5 V) and ground at the connector. Repair any missing reference or ground.
Backprobe TPS output and observe voltage at closed throttle and while slowly opening throttle. Compare to expected range and to Bank 1 (if present).
If no TPS output, check continuity between TPS connector and ECU for open or short to ground/5V. Wiggle wiring to test for intermittent faults.
Inspect/scan CAN bus or vehicle network messages if the throttle signal is networked; check for lost or repeating messages.
If wiring and power/ground are good but signal absent or erratic, bench-test or replace the throttle body/TPS assembly for Bank 2.
After repair, clear codes and perform throttle adaptation / relearn procedure per manufacturer. Road test and verify the code does not recur.
If symptoms persist, suspect ECU internal fault; confirm with manufacturer diagnostics before ECU replacement.