Failed ignition coil on cylinder 3 (open or shorted primary winding); Damaged or corroded electrical connector at the cylinder 3 coil; Broken, chafed, or open wiring in the coil activation circuit between the ECM and coil; Poor ground connection for the ignition coil circuit; Faulty engine control module (ECM) driver for the coil circuit, though rare; Contamination or oil intrusion into the coil boot or spark plug well causing circuit interference

DTC codes / Jaguar codes / P1363

P1363 · JaguarIgnition Coil Cylinder 3 No Activation

Q: What does code P1363 mean?

Ignition Coil Cylinder 3 No Activation. P1363 on a Jaguar means the engine control module (ECM) commanded the ignition coil for cylinder 3 to fire but detected no electrical activation or feedback from that coil circuit. The ECM monitors the coil primary circuit and flags this code when the expected current pulse or confirmation signal is missing, indicating an open circuit, short, or failed coil.

P1363 on a Jaguar means the engine control module (ECM) commanded the ignition coil for cylinder 3 to fire but detected no electrical activation or feedback from that coil circuit. The ECM monitors the coil primary circuit and flags this code when the expected current pulse or confirmation signal is missing, indicating an open circuit, short, or failed coil.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Rough idle or misfire sensation, especially noticeable at idle or low speeds
Reduced engine power or hesitation during acceleration
Shaking or vibration from the engine bay that may worsen under load
Possible poor fuel economy due to incomplete combustion in cylinder 3
In some cases, a flashing check engine light if the misfire is severe enough to damage the catalytic converter

Common causes, most likely first

Failed ignition coil on cylinder 3 (open or shorted primary winding)
Damaged or corroded electrical connector at the cylinder 3 coil
Broken, chafed, or open wiring in the coil activation circuit between the ECM and coil
Poor ground connection for the ignition coil circuit
Faulty engine control module (ECM) driver for the coil circuit, though rare
Contamination or oil intrusion into the coil boot or spark plug well causing circuit interference

How to diagnose and fix it

Scan all modules for stored and pending codes, and record freeze-frame data to confirm the fault conditions
Perform a visual inspection of the cylinder 3 ignition coil, connector, and wiring for damage, corrosion, or oil contamination
Swap the cylinder 3 ignition coil with a known-good coil from another cylinder and clear the code to see if the misfire moves
Use a multimeter to check the resistance of the cylinder 3 coil primary and secondary windings against factory specifications
Check for battery voltage at the coil connector with the key on, and inspect the ground circuit for continuity
Perform a wiggle test on the wiring harness while monitoring coil activation with a lab scope or scanner to reveal intermittent opens
If the circuit and coil test good, check the ECM driver signal with an oscilloscope and repair or replace the ECM only as a last resort

Why cylinder 3 coil codes mislead

A P1363 can be set by a faulty spark plug or excessively large plug gap that raises the coil's firing voltage beyond what the ECM expects, even though the coil itself is not defective.
Jaguar coil-on-plug connectors are prone to heat damage and brittle plastic locks, so a coil that tests fine on the bench may still cause this code due to a loose or intermittent connection in the vehicle.
The ECM may set P1363 without ever illuminating the check engine light if the fault is intermittent and does not cause a measurable misfire during the drive cycle, so a stored code does not always mean an active problem.
Oil leaking from a failed cam cover gasket into the spark plug well can short the coil boot and trigger this code, and replacing only the coil without fixing the leak leads to a repeat failure.
A weak battery or poor engine ground can cause multiple coil activation codes, so always check charging system health before condemning individual coils.

Can I keep driving with P1363?

You can drive cautiously to a repair shop if the check engine light is steady and the engine runs smoothly, but avoid heavy acceleration or long trips. If the light flashes or the engine misfires noticeably, stop driving to prevent catalytic converter damage from unburned fuel.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

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