EVAP Archives - TechShop Magazine
EVAP Test Late-Model Vehicles with Redline Detection EasyConnect

Technicians can snap the adapters into an easily accessible line, then connect their smoke machine to the EVAP system.

AVI Live Training: Toyota EVAP Livestream With Bob Pattengale

Bob Pattengale, from Robert Bosch, LLC, will be covering Toyota EVAP Diagnostics. This system started appearing in 2005 and is now the primary system used on Toyotas. The live online training program is February 13th from 6:00 p.m. to 7:00 p.m. EST. The training program is FREE (free AVI OnDemand account required).

Tech Tip: Infiniti EVAP Leak DTC Diagnosis – DTCs: P0440/P0442/P0455/P0456/P1440/P1456

Applied Vehicles: 1998 and later Infiniti ­vehicles with an EVAP service port. DTCs: P0440, P0442, P0455, P0456, P1440 and P1456 If one or more of the DTCs listed above related to EVAP system leaks is found stored in Self Diagnosis, use the Repair Flow Chart shown in Fig. 1. Use the EVAP system diagram (Fig.

Pulling Codes: The Story of Code P0456

The Smallest of Details? This month’s Pulling Codes documents the infamous P0456 code — 0.20 leak detected. A small leak code can be the most challenging for any technician, so Carlton Banks gives his suggested plan of attack.

Free New Wells Vehicle Electronics Video Covers Toyota EVAP Diagnostics

The step-by-step diagnosis and repair of EVAP system issues on a 1999 Toyota Camry LE model is now covered in a free troubleshooting video available from Wells Vehicle Electronics. The company’s Technical Services team produced the video using a Camry LE model that had failed an emissions test as a result of a PO446 code, which indicates that a leak was detected while activating the vacuum switch valve (VSV) during an EVAP monitor test.

Tech Tip: Honda Has MIL On with DTC P1457

The EVAP bypass solenoid valve can fail due to corrosion, caused by water getting inside. If the water contains road salt, the solenoid windings could corrode, causing the valve to fail. In a few rare instances, the corrosion could be severe enough to cause an internal short in the solenoid valve, which could damage the ECM/PCM. If this happens, both the bypass solenoid valve and the ECM/PCM would need to be replaced.

Tech Tip: Honda MIL Comes On with DTC P1457 Set

If you encounter a Honda with the MIL on with DTC P1457 (EVAP control system leakage), this may be caused by the EVAP solenoid valve (fuel vent module) being blocked or restricted. To correct this, install an EVAP solenoid valve kit.

Tech Tip: Toyota Key Off Evap Diagnosis

Toyota has MIL on with DTC P0456 or P0455 and P0441; and MIL on with DTC P043E, P043F, P2401, P2402 and P2419.

Tech Tip: Kia MIL Illumination with Front Heated O2 Sensor DTCS

If a 2004-’06 Spectra 2.0L exhibits an MIL on

Pulling Codes: The Story of Code P0446

This is the first in a series of investigations covering many states’ top emissions-related codes. Our goal in this report is to discuss the characteristics of the P0446 code as it applies to many GM systems.

New Emissions Technology: Fuel Economy, Global Warming & Alternative Fuels

We can expect to see more innovations designed to improve fuel economy and/or eliminate our dependence on oil altogether, says Technical

Tech Feature: Diagnosing Ford Exhaust Gas Recirculation System Problems

To diagnose and repair Ford exhaust gas recirculation (EGR) systems properly, it is important to understand how they work and what is unique to the product line.