P0591 on Jeep: How to Diagnose & Fix
Cruise Control Multi-Function Input "B" Circuit Range/Performance
1 Jeep model · 1 documented issue · 1 critical
P0591 on Jeep by model: symptoms, diagnosis and fix
FCA bulletin 08-005-17 REV. A covers an airbag or traction-control warning light on 2011-2016 JK Wranglers caused by the steering-column clockspring, with driver-airbag circuit, steering-angle-sensor, speed-control switch or steering-wheel control codes stored. A failed clockspring can leave the driver airbag circuit open. Applies to: 2011-2016 Jeep Wrangler and Wrangler Unlimited (JK), left-hand drive, built on or after February 16, 2010 and before May 2, 2016, when one of the bulletin's trouble codes is stored. A 2016 built on or after May 2, 2016 is outside the bulletin. Right-hand-drive JKs were covered instead by safety recalls S40 (NHTSA 16V-288, built through May 2, 2016) and 27B (NHTSA 24V-196, 2016 models built May 3 to September 16, 2016).
How to Fix
If the airbag light is on, have a dealer read the codes; the bulletin applies only when one of its codes is found. The repair replaces the clockspring, the upper and lower steering-column shrouds and the steering-wheel back cover. The bulletin notes a 15-year, unlimited-mile warranty for this repair on included vehicles (X68), counted from the in-service date; the dealer must confirm your VIN. Normal warranty rules apply; this is not a recall or a promise of free repair. Do not work on the airbag yourself.
Sources for this issue (3)
P0591 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0591 mean on a Jeep?
P0591 stands for "Cruise Control Multi-Function Input "B" Circuit Range/Performance." The cruise control multi-function input 'B' signal is present but out of the expected range or implausible — it does not match valid switch-state values. A range/performance fault. On Jeep it is documented across 1 model: Wrangler.
What are the most common causes of P0591?
The most common causes of P0591 are: Faulty cruise/multi-function switch, Wiring resistance / poor connection, Corroded connector, Faulty clockspring, Faulty PCM input. The specific cause varies by vehicle.
How much does it cost to fix P0591 on a Jeep?
Repair costs vary widely with the root cause and Jeep model; each issue on this page carries its own estimate where one is published.
Looking for P0591 on a different make?
View P0591 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.