What does code P1393 mean?

Q: What does code P1393 mean?

Variable Valve Timing Solenoid A Circuit High Input. P1393 on a Jaguar indicates that the engine control module (ECM) has detected an abnormally high voltage on the electrical circuit for the variable valve timing (VVT) solenoid on bank A. The ECM expects the solenoid control circuit to pull the voltage low when commanded, but it is seeing voltage at or near battery level, which points to an open circuit, a short to power, or a failed solenoid.

DTC codes / Jaguar codes / P1393

P1393 · JaguarVariable Valve Timing Solenoid A Circuit High Input

P1393 on a Jaguar indicates that the engine control module (ECM) has detected an abnormally high voltage on the electrical circuit for the variable valve timing (VVT) solenoid on bank A. The ECM expects the solenoid control circuit to pull the voltage low when commanded, but it is seeing voltage at or near battery level, which points to an open circuit, a short to power, or a failed solenoid.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

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