B0646 Acura Tl DTC Code | EngineDTC.com

Acura Tl Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	In-Line Engine
Engine Air Intake Process :	Supercharged Engine

Your Acura Tl engine control system detects a problem, the computer stores the diagnostic trouble code B0646 in its memory. To figure out what is wrong with your vehicle you must first extract the B0646 DTC For Acura Tl.

B0646 Acura Tl engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)

B0646 Acura Tl DTC Meaning

B	Body Code - Problem is antilock brake system, electronic suspension and steering systems.
0	SAE - Generic
6	Vehicle Speed Control And Idle Control System
4	Control Module Throttle Actuator Position Performance
6	Transmission Control Module Reprogrammable Memory

OBD B0646 Acura Tl code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and B0646, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to B0646 DTC For Acura Tl malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for B0646 DTC For Acura Tl and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.