Probable Cause

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Ensure battery voltage is more than 10 volts at idle.

NOTE: When DTC P1124 is detected in 2 consecutive trips, the ECM enters fail-safe mode and the MIL turns on.

Code will set when ECM detects throttle control motor relay is stuck on. Possible causes are:

For DTC P1124:

Throttle control motor relay is shorted.
Throttle control motor relay failed.

Code will set when ECM detects voltage supply from power source to throttle control motor is excessively low. Possible causes are:

NOTE: When DTC P1126 is detected even in the first trip, the ECM enters fail-safe mode and the MIL turns on.

For DTC P1126:

Throttle control motor relay is open.
Throttle control motor relay failed.