✅ Fixed
Replaced all spark plugs with NGK iridium plugs. One coil pack was also weak — replaced. Smooth idle restored immediately.
Land Rover Discovery 2015 P0300 random misfire rough idle
On This Page:
🔍 Symptoms
⚙️ Causes
🔧 All Repairs
⚠️ Avoid These
🧾 Driver Reports
🔗 Similar Faults
🩺 Related Symptoms
⚡ Quick Summary
Severity Level
High
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Can become a safety issue if left unresolved
Urgency Level
🟠 Fix Soon
Land Rover Discovery 2015 P0300 random misfire detected. Engine shaking at idle. Check engine light on. 54671 km. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
🔍 Symptoms
📍 P0300 — random misfire causing rough idle
📍 Land Rover Discovery
⚠️ P0300 fault code
⚙️ Possible Causes
Fault code P0300 detected
P0300 — random misfire causing rough idle
Land Rover Discovery
Possible: Replaced all spark plugs with NGK iridium plugs. One coil pack was also weak — replaced. Smooth idle restored immediately.
Repair / Solution
Based on 79 driver confirmations
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Land Rover Discovery 2015 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
🧾 Driver Reports
🚗 More About This Vehicle
📋 All Land Rover Discovery fault reports →
🚘 All Land Rover fault reports →
🔧 Browse all fault reports →
Explore more Land Rover models
Help other owners by sharing your experience.
Your real-world fix helps thousands of drivers worldwide. Takes 2 minutes.