The Quick Answer above is the generic definition. What follows is the model-specific detail for the Opel models that log P0302.
DTC/P0302·Opel
P0302 on Opel: Causes, Symptoms and Fix Cost
Quick Answer
High SeverityNot safe to driveOpel
P0302 on a Opel indicates your engine's computer has detected consistent misfires specifically in cylinder 2. This single-cylinder code narrows the problem to that cylinder's ignition coil, spark plug, fuel injector, or internal compression, making targeted diagnosis significantly easier compared to a random misfire code like P0300.
Typical repair cost, all makes€35 - €1800
Connect any standard Bluetooth OBD2 adapter to your Opel and Skanyx tells you what P0302 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P0302 mean on a Opel?
Opel Astra
2004-2024The 1.4 Turbo (A14NET/B14NET) in Astra J and K models has documented ignition coil module failures causing misfires on individual cylinders. Cylinder 2 is frequently affected. The coils sit in a single module on these engines, so the pack is replaced as a unit rather than one coil at a time.
What causes P0302 on a Opel?
Beyond the generic causes listed on the main P0302 page, these are the patterns noted for Opel models:
Opel AstraIgnition coil module failure on 1.4 Turbo
Opel AstraSpark plug thread damage from over-torquing on aluminium heads
How to diagnose P0302 on a Opel with OBD2
Follow these steps to pinpoint the root cause of P0302:
- Read freeze-frame data and note engine RPM, load, and temperature when the misfire occurred
- Swap the ignition coil from cylinder 2 to a different cylinder. Clear codes and drive. If the misfire code moves to the new cylinder, the coil is faulty
- Inspect the spark plug on cylinder 2 for wear, oil fouling, or abnormal electrode erosion. Replace if needed
- Test the fuel injector on cylinder 2 using a noid light or by listening for the click pattern with a mechanic's stethoscope
- If spark and fuel are confirmed good, perform a compression test on cylinder 2. Compare results against the manufacturer's specification and other cylinders
How much does P0302 cost to fix on a Opel? (EUR)
Estimated repair costs for P0302 in EUR, compiled across makes. Opel costs typically sit in the middle of each range.
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Codes related to P0302
These codes are often seen alongside P0302 or point to related issues, on any make:
Looking for the full P0302 reference (all makes, full diagnosis flow, complete repair cost matrix)?
See the main P0302 guideSkanyx · Opel
Diagnose P0302 on your Opel
Your car logged P0302. Skanyx reads it on any standard Bluetooth OBD2 adapter, tells you whether it is safe to keep driving, and shows the €35-€1800 repair range so you know the number before a shop quotes you. Free on iPhone and Android, and you do not need to be a mechanic to read it.
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