Jeep Diagnostic Trouble Codes

Common OBD2 fault codes found on Jeep vehicles with model-specific causes, known issues, TSBs, and adjusted repair cost estimates. Each guide is tailored for Jeep owners.

Misfire

P0305High

Cylinder 5 Misfire Detected

Jeep Grand Cherokee 5.7L HEMI • 2005-2018

The HEMI runs 16 plugs (two per cylinder). MDS cylinder deactivation applies to cylinders 1, 4, 6 an...

Electrical

U0121High

Lost Communication With Anti-Lock Brake System (ABS) Control Module

Jeep Grand Cherokee • 2011-2018 (WK2, 3.6L Pentastar and 5.7L HEMI)

WK2 Grand Cherokees suffer TIPM (totally integrated power module) issues that intermittently kill po...

Diagnose your Jeep with Skanyx

Connect a standard Bluetooth OBD2 adapter to your Jeep, scan for codes, and get AI-powered diagnostics with severity ratings and repair cost estimates.

Download Skanyx