Code Definition

P1125 — Throttle Position Motor fail safe mode

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Honda

About P1125

P1125 is a manufacturer-specific powertrain diagnostic trouble code recorded for Honda vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1125 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC P1125 is a Honda specific code indicating the Electronic Throttle Control System (ETCS) has entered throttle position motor fail safe mode. The Powertrain Control Module (PCM) drives the throttle plate with a throttle actuator motor and monitors the result through dual Throttle Position sensors built into the throttle body. When the PCM cannot reliably command or verify throttle plate position, it shuts the actuator motor down and lets a return spring hold the plate at a fixed fail safe angle, controlling engine speed through a limited idle strategy. With the system in fail safe the driver...

Join TaT to view the complete code information and diagnostic details.

Quick Facts