What does code P1699 mean?

Q: What does code P1699 mean?

Engine Torque Control Cut Signal Circuit High Input. P1699 on a Subaru means the engine control module (ECM) has detected an abnormally high voltage on the engine torque control cut signal circuit, which is the wire the ECM uses to request a torque reduction from the transmission control module (TCM) during gear shifts. The ECM expects a specific voltage range on this communication line, and a reading above the upper threshold triggers the code because the circuit is either shorted to power, open, or the TCM is not pulling the signal low as commanded.

DTC codes / Subaru codes / P1699

P1699 · SubaruEngine Torque Control Cut Signal Circuit High Input

P1699 on a Subaru means the engine control module (ECM) has detected an abnormally high voltage on the engine torque control cut signal circuit, which is the wire the ECM uses to request a torque reduction from the transmission control module (TCM) during gear shifts. The ECM expects a specific voltage range on this communication line, and a reading above the upper threshold triggers the code because the circuit is either shorted to power, open, or the TCM is not pulling the signal low as commanded.

SystemPowertrain

Code typeSubaru specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for Subaru vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.