Service bulletin 18-018-14 REV. B

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	10217969
Published by NHTSA	2022-08-22
Manufacturer's number	18-018-14 REV. B
Manufacturer's date	2014-04-16
NHTSA component	ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

Flash: MIL Illumination - Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a condition that the Oil Life Monitor shows faster then expected oil life deterioration. Software enhancements will address this issue. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that any of the following Diagnostic Trouble Code(s) may have been set erroneously: ? P0087-00 - FUEL RAIL PRESSURE TOO LOW ? P0088-00 - FUEL RAIL PRESSURE TOO HIGH ? P016F-00 - CLOSED LOOP FUEL PRESSURE CONTROL AT LIMIT - PRESSURE TOO LOW ? P009A-00 - INTAKE AIR TEMPERATURE / AMBIENT AIR TEMPERATURE CORRELATION ? P0234-00 - TURBOCHARGER OVERBOOST CONDITION ? P0420-00 - CATALYST EFFICIENCY (BANK 1) ? P0426-00 - CATALYST TEMPERATURE SENSOR CIRCUIT PERFORMANCE (BANK 1 SENSOR 1) ? P050E-00 - COLD START ENGINE EXHAUST TEMPERATURE TOO LOW ? P05F8-00 REDUCTANT HEATER CONTROL MODULE PERFORMANCE ? P061B-00 - INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCE ? P062B-00 - INTERNAL CONTROL MODULE FUEL INJECTOR CONTROL CIRCUIT PERFORMANCE ? P0128-00 - THERMOSTAT RATIONALITY ? P1D30-00 - OIL VISCOSITY TOO LOW ? P200A-00 - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 1 ? P200B-00 - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 2 ? P202E-00 - REDUCTANT INJECTION VALVE CIRCUIT PERFORMANCE ? P203E-00 - REDUCTANT LEVEL SENSOR 1 CIRCUIT INTERMITTENT/ERRATIC ? P204F-00 - REDUCTANT SYSTEM PERFORMANCE ? P2080-00 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT PERFORMANCE ? P2084-00 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 2 ? P20BA-00 - REDUCTANT HEATER 1 CONTROL CIRCUIT PERFORMANCE ? P20BE-00 - REDUCTANT PRESSURE LINE HEATER CONTROL CIRCUIT PERFORMANCE ? P20EE-00 - SCR NOX CATALYST EFFICIENCY BELOW THRESHOLD BANK 1 ? P20C2-00 - REDUCTANT HE

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Trouble codes named

P0087, P0088, P009A, P0128, P016F, P0234, P0420, P0426, P050E, P05F8, P061B, P062B, P1D30, P200A, P200B, P202E, P203E, P204F, P2080, P2084, P20BA, P20BE, P20C2, P20EE

Vehicles listed
JEEP GRAND CHEROKEE	2014

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

Recalls for the same vehicles and component
2023338	2023-06-08. Engine
23V411000	2023-06-08. ENGINE AND ENGINE COOLING
2020544	2020-11-12. Engine
20V699000	2020-11-12. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
2020371	2020-08-13. Engine
20V475000	2020-08-13. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
2018269	2018-05-17. Engine
18V332000	2018-05-17. ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING
2017574	2017-11-22. Electrical
17V741000	2017-11-21. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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