# Service bulletin EG00299

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: 606212
- Published by NHTSA: 1999\-08\-12
- Manufacturer's number: EG00299
- Manufacturer's date: 1999\-06\-11
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

## NHTSA's summary

REVISED INFORMATION TO ASSIST IN THE DIAGNOSIS OF DIAGNOSTIC TROUBLE CODE P0420 INDICATING A POSSIBLE CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD CONDITION. \*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

## Trouble codes named

P0420

## Vehicles listed

- 1999 TOYOTA SIENNA

## Other bulletins for the same vehicles and component

- [T\-TT\-0010\-10 Rev](/bulletins/10132812.md), 2018-04-02, Service bulletin: BACK OVER PREVENTION; ENGINE. Tech Tip: Low battery voltage can contribute to a MIL "ON" condition for P0335 \(Crankshaft Position Sensor Circuit\) and/or P0340 \(Camshaft Position Sensor Circuit\) due to inconsistent rotational speed of the engine's crankshaft.
- [4612](/bulletins/10015670.md), 2005-08-04, Service bulletin: ENGINE AND ENGINE COOLING. DIAGNOSTIC \- ENGINE REPAIR MANUAL CORRECTION. 00400\-RM657\-U. \*TT
- [03704](/bulletins/10010021.md), 2004-11-03, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. ENGINE BANK 1 AND BANK 2 A/F AND 02 IDENTIFICATION. VARIOUS TOYOTA MODELS. \*TT
- [00804](/bulletins/10007098.md), 2004-05-26, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. MALFUNCTION INDICATOR LAMP ON 1MZ\-FE ENGINE MISFIRE DIAGNOSTIC TROUBLE CODE \(DTC\) P0300, P0301, P0302, P0303, P0304, P0305 OR P0306. \*TT
- [TC02002](/bulletins/628696.md), 2002-03-19, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SPECIAL POLICY ADJUSTMENT REGARDING VEHICLES EXPERIENCING ENGINE OIL GELLING OR SLUDGE. \*TT
- [EG01399](/bulletins/610062.md), 2000-04-14, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT A ROUGH IDLE, AND OR A MALFUNCTION INDICATOR LIGHT ON CONDITION IN WHICH A SINGLE CYLINDER MISFIRE CODE, OR CODES ARE PRESENT. \*TT
- [EG00100](/bulletins/610053.md), 2000-04-14, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CALIFORNIA EMISSION SPECIFICATION VEHICLES MAY EXHIBIT A ROUGH IDLE AND OR A MIL ON CONDITION IN WHICH A SINGLE CYLINDER MISFIRE CODE OR CODES ARE PRESENT. \*TT
- [EG00299](/bulletins/604746.md), 1999-05-11, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT DIAGNOSTIC TROUBLE CODE P0420 INDICATING A POSSIBLE CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD CONDITION. \*TT

JSON: [/v1/bulletins/606212](/v1/bulletins/606212)

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