Automotive trainer John Forro advocates knowing your tooling needs and developing a strong relationship with those tools. Knowing a tool's capabilities and limitations will help you advance your diagnostic process.
If you're buying a new scope or upgrading one you already own, here are some accessories that can make you more productive.
If you're in the market for a new scope, Underhood Service Editor Andrew Markel has provided his recommendations on how you can get the most bang for your diagnostic dollar.
Pulling a P0135 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) code means you're dealing with a possible oxygen sensor heater element and/or associated components in this circuit. This article provides a game plan for diagnosing a vehicle with this code.