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Check P0158 Fault Code

When you check engine light came on code P0158 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 P0158 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0158 Code Reason

P0158 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.

P0158 Possible Fix :

Probably the biggest result of injector failure is due to the injectors having excessive return flow or back leakage. This is due to worn parts which allow excessive fuel to go through the diesel injector and to return back to the tank or fuel system. This causes a drop in rail pressure which results in hard starting or not starting at all.

P0158 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0158 OBD-II Trouble Code The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio)

Reason For P0158 Code

The reason of P0158 OBD-II Fault Code Check is P0158 O2 Sensor Circuit High Voltage Bank 2 Sensor 2.

P0158 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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