P1121 HONDA Possible Causes
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Poor electrical connection in throttle position sensor circuit
How to Fix P1121 HONDA Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check engine light on (or service engine soon warning light)
P1121 HONDA Meaning
Throttle position lower than expected is the generic description for Honda P1121 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have further information about Honda OBDII P1121 code.