# Service bulletin 21\-029\-16

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.

- Type: Service bulletin
- NHTSA id: 10121725
- Published by NHTSA: 2017\-11\-03
- Manufacturer's number: 21\-029\-16
- Manufacturer's date: 2016\-09\-01
- NHTSA component: ELECTRICAL SYSTEM; ENGINE; POWER TRAIN; FUEL SYSTEM, GASOLINE

## NHTSA's 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

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121725-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121725-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Fuel system, Transmission and driveline

## Trouble codes named

P0122, P0123, P0171, P0174, P0222, P0223, P0335, P0441, P0456, P1115, P2299, P2610

## Vehicles listed

- 2014 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [2023338](/recalls/tc/2023338.md), 2023-06-08: Engine
- [23V411000](/recalls/nhtsa/23V411000.md), 2023-06-08: ENGINE AND ENGINE COOLING
- [2022303](/recalls/tc/2022303.md), 2022-06-09: Fuel System
- [22V406000](/recalls/nhtsa/22V406000.md), 2022-06-09: FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP
- [2020544](/recalls/tc/2020544.md), 2020-11-12: Engine
- [20V699000](/recalls/nhtsa/20V699000.md), 2020-11-12: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)
- [2020371](/recalls/tc/2020371.md), 2020-08-13: Engine
- [20V475000](/recalls/nhtsa/20V475000.md), 2020-08-13: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [2018269](/recalls/tc/2018269.md), 2018-05-17: Engine
- [18V332000](/recalls/nhtsa/18V332000.md), 2018-05-17: ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING

## Other bulletins for the same vehicles and component

- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [S2623000023](/bulletins/11031337.md), 2026-04-15, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Power Liftgate Inoperative.
- [S2621000003 REV.A](/bulletins/11030138.md), 2026-03-18, Service bulletin: POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [S2608000010](/bulletins/11030042.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. Active Diagnostic Trouble Code \(DTC\) B1A10\-00, B1A11\-00, B1A12\- 00, B1A13\-00\-, B1A14\-00, B1A15\-00, B1A16\-00, and B1A17\-00 in The Radio Frequency Hub \(RFH\)
- [9100671](/bulletins/11023329.md), 2025-09-24, Service bulletin: ELECTRICAL SYSTEM. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders: Warranty, Mopar, Customer pay and Service contract. Order "68" part number for New unsold units only.
- [9100639](/bulletins/11021845.md), 2025-08-13, Service bulletin: ENGINE. Verify Reman part number availability. Order the "R" part number for all orders: Warranty, Mopar, customer pay and service contract. Order "68" part number for New unsold units only.
- [S2208000138 REV.B](/bulletins/11020600.md), 2025-07-09, Service bulletin: ELECTRICAL SYSTEM. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
- [105038](/bulletins/11018500.md), 2025-05-20, Service bulletin: FUEL/PROPULSION SYSTEM. TUBE \- FUEL INJECTOR SUPPLY \& GASKET \- NONE
- [105039](/bulletins/11018408.md), 2025-05-16, Service bulletin: FUEL/PROPULSION SYSTEM. TUBE \- FUEL INJECTOR SUPPLY \& GASKET \- NONE

JSON: [/v1/bulletins/10121725](/v1/bulletins/10121725)

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