Posts Tagged: trouble code
P0137
Fix code P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 1). This sensor is located on the engine bank that houses #1 cylinder and is located AFTER the catalytic converter The PCM sends a reference voltage (usually 5-volts) to the variable resistor in the oxygen sensor and looks for a return voltage. Once the sensor is heated up, the PCM expects to see a varying voltage. If the PCM sees a constant low voltage, it will set a trouble code P0137. Most common causes are: vacuum leak that’s allowing … Read More
P0340 Dodge Neon
P0340 Dodge Neon Shops are reporting that customers have replaced a camshaft position sensor (CPS) due to a P0340 Dodge Neon. Upon replacement, the code reappears. In most cases, the customer has installed an aftermarket sensor. When replaced with a factory sensor and the codes are cleared, mechanics report that the problem trouble code does not return. © 2012 Rick Muscoplat
P0174
P0174 System Too Lean (Bank 2) If you have a P0174 System Too Lean (Bank 2) trouble code, read this to understand what it means Lean codes are incredibly difficult to diagnose. And it’s one trouble code where you don’t want to start throwing parts at the problem. The guys at the parts store will tell you to replace the Oxygen sensor. Nice guess, but probably wrong. They’re assuming that the fuel mixture is correct but the sensor is reporting it wrong. Oxygen sensors DO wear out. But what if the … Read More