P2138 on the 2018 Triumph Street Cup
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| SMTTB19429 | 2019-03-18. Service bulletin. Technical Bulletin 194 provides instructions that apply to Front Master Cylinder Reservoir Cap Screws, Windscreen Support Fixings, Keyless Ignition, Clutch Cover Removal and Installation, Rider's Seat (single seat), Side Stand Spring Peg, Cylinder Head Installation, Alternator Oil Feed Spray Jet, Headlight and Indicator Wiring Harness Routing, Transmission Output Shaft, Horn Wire Routing, Instrument Downloads - 900cc and 1200cc Modern Classic Models with Analogue/LCD Instruments, Pinpoint Test - Engine Start/Stop Switch Correlation Error, Diagnostic Trouble Code (DTC) P2138 - Twist Grip Position Sensor 1 Correlation Error with Twist Grip Position Sensor 2, Electronic Systems Commissioning and Motorcycle Unlocking and Battery Anti-Tamper Label. |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.