DTC P1659 Acura
Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction
Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction
Description
Ignition switch ON (II), battery voltage 10 volts minimum and DTCs P0122, P0123, P0222, P0223, P2101, P2118, P2122, P2123, P2127, P2128, P2135, P2138, P2176 are not active. The voltage is not applied from the throttle actuator controller relay for at least 200 milliseconds. The execution time is once per driving cycle. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Blown fuse
Poor connections or loose terminals at the under-hood fuse relay box (ETCS control relay) and the PCM
Open or Short in the wire between the PCM and the under-hood fuse relay box
Faulty right side engine compartment wire harness
Faulty relay control module (under-hood fuse relay box)
PCM needs to be updated with the latest software
Video Guide
Diagnostic Info
- DTC Code: P1659
- Brand: Acura