P0688 Engine Trouble Code
When you check engine light came on code P0688 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P0688 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.
P0688 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||O2 Sensor Heater Circuit Malfunction||Cylinder 1 Injector Circuit Low||Timing Reference High Resolution Signal A Too Many Pulses|
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.
P0688 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP0688 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.
Reason For P0688 CodeThe reason of P0688 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.
P0688 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.