DTC P1658 Acura
Electronic Throttle Control System (ETCS) Control Relay ON Malfunction
Electronic Throttle Control System (ETCS) Control Relay ON Malfunction
Description
The communication signal is input from the throttle actuator control module for at least 2 seconds, after the throttle actuator control module relay is turned off. The execution time is once per driving cycle. DTCs P0122, P0123, P0222, P0223, P1659, P2101, P2118, P2122, P2123, P2127, P2128, P2135, P2138, P2176 are not active. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Poor connections or loose terminals at the under-hood fuse relay box (ETCS control relay) and the PCM
Short in the wire between the PCM and the under-hood fuse relay box (ETCS control relay)
Short to power in the wire between the PCM and the under-hood fuse relay box (ETCS control relay)
Faulty relay control module (under-hood fuse relay box)
PCM needs to be updated with the latest software
Video Guide
Diagnostic Info
- DTC Code: P1658
- Brand: Acura