When your 2024 Jeep Wrangler displays the P0305 code, the diagnostic significance depends on which engine is installed. The 2024 Wrangler offers both four-cylinder and V6 options. P0305 is valid on the 3.6L Pentastar V6 but anomalous on the 2.0L turbo four-cylinder or 4xe plug-in hybrid.
2024 Wrangler Engine Options
The 2024 Wrangler offers the 3.6L Pentastar V6 (285 hp), 2.0L turbo I-4 (270 hp), 4xe plug-in hybrid (375 hp combined using the 2.0L turbo), and the 392 V8 (470 hp) on Rubicon 392. The V6 and V8 have cylinder 5—the four-cylinder does not.
If You Have the V6
On the 3.6L Pentastar V6, cylinder 5 is located on the driver side (left bank) toward the rear. Common causes include spark plug wear, ignition coil failure, and fuel injector issues.
If You Have the 2.0L Turbo or 4xe
If your Wrangler has the four-cylinder engine, P0305 is anomalous—this engine has only cylinders 1-4. Investigate diagnostic system issues instead.
Diagnostic Approach
First verify which engine is installed. On V6 models, proceed with standard cylinder 5 misfire diagnosis. On four-cylinder models, check for ECM issues and scan tool compatibility.