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Service bulletin 1856

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)
TypeService bulletin
NHTSA id625949
Published by NHTSA2001-12-12
Manufacturer's number1856
Manufacturer's date2001-02-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

NHTSA's summary

INFORMATION ON VEHICLES EXPERIENCING POOR IDLE QUALITY, HESITATION AND OTHER DRIVABILITY CONCERNS AS WELL AS DIAGNOSIS TO FOLLOW PRIOR TO REPLACING THE MASS AIR FLOW SENSOR (MAFS). *TT

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

Engine, Exhaust and emissions

Vehicles listed
JAGUAR XJS1995, 1996

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
17122005-02-08. Service bulletin. AJ16 EXHAUST GAS RECIRCULATION SYSTEM REPLACE PROMS AND EGR VALVE. THIS SERVICE BULLETIN REPLACES 1712 DATED 11/01. *EH
1782005-02-08. Service bulletin. POOR HOT START TANK PRESSURE CONTROL VALVE CHECK OPERATION. THIS SERVICE BULLETIN REPLACES 178 DATED 5/98. *EH
17102005-02-08. Service bulletin. INSUFFICENT AIR FLOW AIR PUMP AIRP DIAGNOSIS. *EH
12632005-02-08. Service bulletin. MAIN BEARING CAP BOLTS REUSE TWICE CONDITIONS. *EH
18562005-02-08. Service bulletin. ROUGH IDLE DRIVABILITY DIAGNOSIS TO FOLLOW PRIOR TO REPLACING MAF. *EH
1710012005-02-04. Service bulletin. AJ16 EXHAUST GAS RECIRCULATION SYSTEM. REPLACE PROMS AND EXHAUST GAS RECIRCULATION VALVE. *EH
17122005-02-04. Service bulletin. AJ16 ENGINE EXTENDED EMISSION PARTS WARRANTY COVERAGE FOR EGR VALVE. *EH
04172005-02-03. Service bulletin. TRANSIT SPARK PLUGS NO LONGER FITTED TO XJ12/XJS V12. *EH
12602005-02-02. Service bulletin. CAMSHAFT COVER OIL LEAKS - AJ16 ENGINE - REVISED BOLT TORQUE SPECIFICATION. *TT
12622005-02-01. Service bulletin. CYLINDER HEAD BOLTS - REUSE TWICE - CONDITIONS. *TT