{"nhtsa_id":10121725,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-03","date":"2016-09-01","document_id":"21-029-16","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE; POWER TRAIN; FUEL SYSTEM, GASOLINE","mfr_system":null,"summary":"Flash: Transmission Shift And Drivability Enhancements Flash: Transmission Shift And Drivability Enhancements Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set: · **P1115 - General Temperature Rationality. · P0441 - EVAP Purge System Performance. · P0456 - EVAP System Small Leak. · P030X - Cylinder x Misfire Detection. · P0335 - Crankshaft Position Sensor Circuit. · P0122 - Throttle Position Sensor 1 Circuit Low. · P0123 - Throttle Position Sensor 1 Circuit High. · P0222 - Throttle Position Sensor 2 Circuit Low. · P0223 - Throttle Position Sensor 2 Circuit High. · P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. · P2610 - PCM Internal Engine Off Timer Performance.** · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean. The customer may also notice the following conditions: · False detonation (spark knock) detected during a Wide Open Throttle (WOT) (North American Market Only). · Will not reach max speed (over 256 kph) during freeway driving (International Market Only). · Less than desired upshift quality in Normal or Sport mode. · Shift inhibit while transitioning in/out of MDS mode. · Less than desired downshift quality while coasting with the brake released or while passing. · Vehicle will not display 2nd gear when entering Manual mode from Snow or ECO mode. · High speed gear hunting (shifting back/forth repeatedly between two gears). · Will not exceed 32 kph (20 mph) in reverse. · Less than desired 2nd gear launch quality while in ECO mode. · Unable to launch in 3rd gear in Snow mode in higher altitudes. · Less than desired shift quality durin","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121725-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121725-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10121725","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0122","P0123","P0171","P0174","P0222","P0223","P0335","P0441","P0456","P1115","P2299","P2610"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_jeep_grand-cherokee"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}