P0308 on Volkswagen
Cylinder 8 Misfire Detected
P0308 on Volkswagen vehicles indicates cylinder 8 misfire detected. Au7o has documented this code across 1 Volkswagen model — most commonly on Taos. P0308 means the engine computer detected a misfire on cylinder number 8 — that cylinder is failing to combust properly or at the correct time. The PCM identifies it by monitoring crankshaft speed variations as cylinder 8 fires. Misfires waste fuel, increase emissions, and can overheat and damage the catalytic converter, so a hard misfire may cause a flashing check engine light. Typical symptoms include rough idle, vibration, hesitation, and reduced power.
Common Causes of P0308
- •Worn, fouled, or incorrectly gapped spark plug on cylinder 8
- •Failed ignition coil or coil-on-plug for cylinder 8
- •Faulty, clogged, or leaking fuel injector
- •Vacuum or intake air leak affecting that cylinder
- •Low compression (worn rings, burnt/leaking valve, head gasket)
- •Damaged spark plug wire or boot (on applicable engines)
- •Carbon buildup or sticking valve
P0308 on Volkswagen by Model
Volkswagen Taos(1 issue)
- EA211 1.5T Engine Ticking and Fuel Injector Noise2022-2025
The EA211 EVO 1.5T engine in the Taos produces a noticeable ticking/tapping noise that concerns many owners. While some of the noise is normal direct-injection fuel injector operation, excessive ticking can indicate a high-pressure fuel pump issue or hydraulic lifter wear. VW states that direct-injection engines are inherently noisier, but some units produce excessive noise beyond the norm. TSB 20-22-01 addresses abnormal engine noise diagnosis.
Looking for P0308 on a different make?
View P0308 across all makes →Frequently Asked Questions
What does P0308 mean on Volkswagen?▼
P0308 stands for "Cylinder 8 Misfire Detected." P0308 means the engine computer detected a misfire on cylinder number 8 — that cylinder is failing to combust properly or at the correct time. The PCM identifies it by monitoring crankshaft speed variations as cylinder 8 fires. Misfires waste fuel, increase emissions, and can overheat and damage the catalytic converter, so a hard misfire may cause a flashing check engine light. Typical symptoms include rough idle, vibration, hesitation, and reduced power. On Volkswagen specifically, this code is documented across 1 model.
What causes P0308 on Volkswagen vehicles?▼
Common causes on Volkswagen: Worn, fouled, or incorrectly gapped spark plug on cylinder 8, Failed ignition coil or coil-on-plug for cylinder 8, Faulty, clogged, or leaking fuel injector, Vacuum or intake air leak affecting that cylinder, Low compression (worn rings, burnt/leaking valve, head gasket). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0308 on a Volkswagen?▼
Repair costs vary widely depending on the root cause and specific Volkswagen model.
Which Volkswagen models have P0308 documented?▼
Au7o has documented P0308 on 1 Volkswagen model: Taos.