Service bulletin 18-048-16

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10076530
Published by NHTSA	2016-07-14
Manufacturer's number	18-048-16
Manufacturer's date	2016-04-21
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

SYMPTOM/CONDITION: A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · P0335 - Crankshaft Position Sensor Circuit. · P0456 - Evap System Small Leak.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Transmission and driveline, Automatic transmission, Software, Transmission control module

Trouble codes named

P0335, P0456

Vehicles listed
JEEP COMPASS	2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
U67	2023-01-17. Service bulletin. Some of the above-involved vehicles may exceed NOx (Oxides of Nitrogen) emission level standards due to loss of catalytic converter efficiency
9003615	2022-10-17. Service bulletin. Electronic Shifter Module (ESM) Special Notes below from previous Techtips; NOTE 1: If mismatch between shifter NIK and PRNDM occur, it may appear that the PRNDM will not light up the first time the shifter is woken up via CAN. Please wait 2 minutes 15 seconds for the PRNDM lights to come back on. This is due to a software update feature of the Shifter lower (04670682A$). During PRNDM software update, the shifter will not be functional. NOTE 2: If Shifter is awake on CAN while disconnecting PRNDM from Shifter (04670682A$), U114C-00 will activate. This is by design and does not require replacement of PRNDM. NOTE 3: PRNDM supply Voltage from Shifter will be deactivated after 3 seconds if PRNDM is disconnected from Shifter while Shifter is awake via CAN and U114C-00 will activate. Power to Shifter will have to be removed for approx.. 20 seconds after PRNDM is connected to reset power to PRNDM from the Shifter. Power can be reset by removing battery power or disconnecting the shifter main connector. This is due to a safety feature built into the Shifter that will cut power to the PRNDM if a communication error is observed between the Shifter and PRNDM. NOTE 4: If Shifter is not responsive after Dead Battery condition, Charge Battery, and once complete disconnect battery terminals for 30 seconds and reconnect. Check Shifter functionality. Please return parts back to FCA Engineering if PRNDM is deemed non-functional after performing this TECHtip. ~
18-048-16 REV. A	2017-11-03. Service bulletin. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: P0335 - Crankshaft Position Sensor Circuit. P0456 - Evap System Small Leak. P219A - Bank 1 Air Fuel Ratio Imbalance. P050B - Cold Start Ignition Timing Performance.The following software enhancement is also available: Engine is hard to start at temperatures -29°C (-20°F) for vehicles utilizing E15 fuel only (Sales Code ECN). Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down.
9002718	2017-11-03. Service bulletin. Hands Free Module - Convergence Telematics Module (CTM) Before replacing the Hands Free Module (HFM), please contact Gaurav Saxena at cell (248) 260-0583 or Tim Kraft at cell (248) 766-5826 ~ IMPORTANT - do not reset the HFM, clear codes or perform a battery reset before calling. Engineering is currently root causing this issue and your assistance is greatly appreciated. Seeking vehicles with HFM in a locked state, inoperative, or offline. If unable to reach this person within 15 minutes, then proceed with the necessary repair.
18-048-16	2016-07-07. Service bulletin. OVERVIEW: This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. OVERVIEW: This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.