P0308 on Dodge
Cylinder 8 Misfire Detected
P0308 on Dodge vehicles indicates cylinder 8 misfire detected. Au7o has documented this code across 3 Dodge models — most commonly on Challenger, Charger, Durango. 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. Typical repair costs on Dodge range from $100 to $3,000, depending on the specific model and root cause.
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 Dodge by Model
Dodge Challenger(2 issues)
- HEMI Lifter/MDS Tick2015-2021
HEMI engines with Multi-Displacement System (MDS) can develop a ticking noise from the hydraulic lifters. This is often related to the MDS deactivation system. Some owners disable MDS via tuner to eliminate the issue.
- Pentastar V6 Rocker Arm/Lifter Tick2015-2023
The 3.6L Pentastar V6 engine can develop a ticking noise from worn rocker arms. Unlike the HEMI MDS tick, this is caused by the roller follower rocker arms wearing out prematurely. The issue typically appears between 50,000-100,000 miles and is more common on 2011-2013 engines but can occur on later models.
Dodge Charger(2 issues)
- HEMI MDS Lifter Tick2011-2023
HEMI engines with Multi-Displacement System (MDS) can develop a ticking noise from the MDS lifters. This tick is most noticeable at idle and during light acceleration. While often not causing immediate damage, it can indicate lifter wear that may eventually require attention.
- Pentastar V6 Rocker Arm/Lifter Tick2011-2023
The 3.6L Pentastar V6 can develop a ticking noise often related to the rocker arms or hydraulic lifters. This is common on engines with higher mileage or irregular oil change intervals. Some early Pentastar engines had rocker arm design issues that were later updated.
Dodge Durango(1 issue)
- HEMI MDS Lifter Tick2011-2023
HEMI engines with Multi-Displacement System (MDS) can develop a ticking noise from the MDS lifters. This is most noticeable at idle and during light acceleration. While often not immediately harmful, it can indicate lifter wear.
Looking for P0308 on a different make?
View P0308 across all makes →Frequently Asked Questions
What does P0308 mean on Dodge?▼
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 Dodge specifically, this code is documented across 3 models.
What causes P0308 on Dodge vehicles?▼
Common causes on Dodge: 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 Dodge?▼
Repair costs on Dodge range from $100 to $3,000, depending on the specific model and root cause.
Which Dodge models have P0308 documented?▼
Au7o has documented P0308 on 3 Dodge models: Challenger, Charger, Durango.