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Check P0128 Fault Code

When you check engine light came on code P0128 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 P0128 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0128 Code Reason

P0128 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.

P0128 Possible Fix :

When you spot grave damage, replace, replace, replace! Otherwise, if it's just a matter of grime buildup or dirty plugs, simply clean these components. If your wires are tangled, prevent arcing and damage caused by friction by using a spark plug wire loom or divider on your car. It basically organizes your wires and offer better insulation. In short, it keeps your wires organized, making it easier to access your spark plug wires for inspection and/or installation.

P0128 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0128 OBD-II Trouble Code Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

Reason For P0128 Code

The reason of P0128 OBD-II Fault Code Check is P0128 Coolant Thermostat Malfunction.

P0128 Solution:

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

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