Code Definition

P1127 — Throttle Position higher than expected

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

About P1127

P1127 is a manufacturer-specific powertrain diagnostic trouble code recorded for Acura vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1127 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

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.

P1127 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

The Engine Control Module (ECM) continuously compares the throttle angle it is commanding with the actual angle reported by throttle position sensors 1 and 2 on the electronic throttle body. DTC P1127 sets when the measured throttle position stays consistently greater than the commanded opening under defined operating conditions, indicating the plate is opening more than the control signal requests. Because an excessive throttle opening can cause unwanted acceleration, the ECM responds by cutting power or forcing limp mode, and the driver may notice surging, an unexpectedly high idle, or restr...

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

Quick Facts