What does code P1315 mean?

Q: What does code P1315 mean?

Persistent Misfire. P1315 on Jaguar vehicles indicates that the engine control module (ECM) has detected a persistent misfire that has exceeded the threshold for a specific cylinder or the entire engine, often after multiple drive cycles. The ECM monitors crankshaft speed fluctuations and identifies when a cylinder fails to contribute power consistently, storing this code when the misfire is severe enough to risk catalyst damage or drivability issues.

DTC codes / Jaguar codes / P1315

P1315 · JaguarPersistent Misfire

P1315 on Jaguar vehicles indicates that the engine control module (ECM) has detected a persistent misfire that has exceeded the threshold for a specific cylinder or the entire engine, often after multiple drive cycles. The ECM monitors crankshaft speed fluctuations and identifies when a cylinder fails to contribute power consistently, storing this code when the misfire is severe enough to risk catalyst damage or drivability issues.

SystemPowertrain

Code typeJaguar specific

SeverityHigh

Fix difficultyProfessional

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.