P0405 Code: Exhaust Gas Recirculation Sensor A Circuit Low
In the 1970s, new emissions standards forced automakers to reduce carbon footprints. But the required …
Engine Codes
P0137 Code: O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
Today’s vehicles use a web of sensors and modules for efficiency and emissions compliance. Oxygen …
P0443 Code: Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Since the 1970s, automakers worked to cut emissions through new technology per legislation. But with …
P0410 Code: Malfunctioning Secondary Air Injection System
Today’s emissions systems are complex, with many parts working in unison for clean exhaust. But …
P0441 Code: Evaporative Emission Control System – Incorrect Purge Flow
The P0441 trouble code can be confusing and concerning for vehicle owners. This code points …
P0122 Code: Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input
While there are a few diagnostic trouble codes that spell disaster, a P0122 code is …
P0012 Code: “A” Camshaft Position – Timing Over-Retarded
When you’re driving down the road, the last thing you want to see on your …
P2138 Code: Throttle/Pedal Position Sensor/Switch “D”/”E” Voltage Correlation
Engine systems once mechanical now rely on electronic throttle control for precision. The throttle plate …
P2004 Code: Intake Manifold Runner Control Stuck Open (Bank 1)
Engines have advanced dramatically, gaining complexity that boosts efficiency but challenges DIY repairs. Once simple, …
P0700 Code: Transmission Control System Malfunction
A check engine light doesn’t always mean an engine issue. Many other modules also trigger …
P0562 Code: System Low Voltage
Seeing your check engine light come on can be worrying, but it’s often a minor …
P0131 Code: O2 Sensor Signal Low Voltage (Bank 1, Sensor 1)
Modern vehicle computers rely on sensor feedback to maximize efficiency. But sensors eventually fail, logging …