Acura Tech Tip: EVAP Large Leak Due To Gas Cap (Codes P0455 And P0456)
On some 2012-2013 Acura ILX, MDX, RDX, TL, TSX and ZDX models, the stock gas cap can cause codes P0455 (EVAP system large leak) and/or P0456 (EVAP system very small leak detected).
More Than Codes: Finding The Story Behind An Emission Code
If you want to diagnose a emissions-related problem, confirm the fix, and know when the car leaves the shop the job will be completed, this article is for you.
Toyota Tech Tip: ABS Noise, Warning Lamps And Code C1431
Some 2012–‘13 model year Camry vehicles may exhibit a condition where ABS brake actuator pump motor noise is heard from the engine compartment with Brake ABS and/or TRAC warning lamp(s) illuminated and DTC C1431 stored.
Fuel Pump Codes And Control: Keeping Pressure In The Zone
The first electric fuel pump circuits were very simple. The pump circuit usually involved a relay and fuse. The control side to the relay was typically wired to an ignition circuit or key switch. The control of the fuel pressure was performed with an analog regulator that could keep a static pressure and adjust for loads with a vacuum signal.
VIDEO: Reading Edge Codes On Brake Pads
Andrew Markel discusses edge codes on brake pads, and how to read them to determine which pads are correct for your customer’s vehicle.
VIDEO: How Misfire Codes Get Set
Andrew Markel discusses misfire codes, and how the camshaft and crankshaft position sensors detect rotational anomalies to set them.
Oxygen Sensor Heater Codes
One of the most difficult problems to cure is an oxygen sensor code related to the heater circuit. If you decide to just put in a new sensor and clear the codes, there is a chance the code will come back because the malfunction in the circuit is not in the oxygen sensor.
VIDEO: BMW DISA Valve Causing Code
In this Tech Minute, Jason Stahl explains how a failing DISA Valve on a BMW can throw various codes and what the replacement options are.
VIDEO: Getting More Information On Generic Codes
Andrew Markel demonstrates how to easily and efficiently gain more information on a code on a specific vehicle that may not tell you much by itself.
Evaporative Emissions Diagnostics: Start With The Basics When You Have Multiple Codes For The Same System
Recently, the shop had a 2002 Lexus SC 430 in for a check engine light with evap codes P0440 – evap malfunction; P0441 – evap incorrect purge flow; and P0446 – evap vent control malfunction.
