What causes P1658 on a Honda?

Sticking ETCS control relay in the under-hood fuse box Short to power in the relay control wire from the PCM Failed throttle actuator control module holding the relay on Corroded relay socket terminals bridging contacts Outdated PCM software misdriving the relay

How do I fix P1658 on a Honda?

Run the ETCS test with a Honda HDS scan tool first Remove and bench-test the ETCS control relay Inspect the relay socket for corrosion or melted plastic Check the control wire for a short to power Replace the relay and retest before suspecting the PCM

P1658 Electronic Throttle Control System Control Relay On Malfunction

Q: What does P1658 mean on a Honda?

P1658 — Electronic Throttle Control System Control Relay On Malfunction. Applies to Civic, Accord, CR-V with drive-by-wire.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Civic, Accord, CR-V with drive-by-wire

What does P1658 mean on a Honda?

P1658 — Electronic Throttle Control System Control Relay On Malfunction. This Honda-enhanced code applies to Civic, Accord, CR-V with drive-by-wire.

Common causes of P1658

Sticking ETCS control relay in the under-hood fuse box
Short to power in the relay control wire from the PCM
Failed throttle actuator control module holding the relay on
Corroded relay socket terminals bridging contacts
Outdated PCM software misdriving the relay

How to fix P1658

Run the ETCS test with a Honda HDS scan tool first
Remove and bench-test the ETCS control relay
Inspect the relay socket for corrosion or melted plastic
Check the control wire for a short to power
Replace the relay and retest before suspecting the PCM