P1500 Starter Signal Circuit Malfunction

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Camry, Corolla, RAV4, Tacoma

What does P1500 mean on a Toyota?

P1500 — Starter Signal Circuit Malfunction. This Toyota-enhanced code applies to Camry, Corolla, RAV4, Tacoma.

Common causes of P1500

Open starter signal wire to the ECM
Blown starter fuse
Failed starter relay
Corroded signal connector
Aftermarket remote start taped into the circuit

How to fix P1500

Check starter fuses
Verify the ECM sees crank signal during start
Test relay operation
Inspect aftermarket wiring taps
Repair the signal circuit