Check P0138 Fault Code

When you check engine light came on code P0138 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 P0138 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0138 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.

P0138 Possible Fix :

Small but critical, a spark plug makes the car move. Its function is to ignite the compressed fuel in the engine. A worn spark plug will cause a weak spark. It may even prevent ignition entirely, or cause ignition at the wrong time. A misfire will affect engine power and fuel economy and cause massive amounts of potential damage.

P0138 OBD-II Diagnostic Powertrain (P) Trouble Code Description P0138 OBD-II Trouble Code The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture Reason For P0138 Code The reason of P0138 OBD-II Fault Code Check is P0138 O2 Sensor Circuit High Voltage Bank 1 Sensor 2.

P0138 Solution:

Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.

What does fault code P0138 mean ? What does a diagnostic reading P0138 mean ? How to fix OBD2 Code P0138 ? What do we know about P0138 code ?

How to Clear P0138 Trouble Code

An OBD 2 scanner is the best and safest way to erase a DTC from your car's system. This scanner communicates with the car's computer and instructs the computer to erase the code. It does not change or tweak the settings from inside the car or its systems.