Check U1237 Fault Code

When you check engine light came on code U1237 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 U1237 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U1237 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.

U1237 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.

U1237 OBD-II Diagnostic Network (U) Trouble Code Description U1237 SCP (J1850) Invalid or Missing Data for Memory Storage so you have to check ODB-II Fault Code Check list. Reason For U1237 Code The reason of U1237 OBD-II Fault Code Check is U1237 SCP (J1850) Invalid or Missing Data for Memory Storage.

U1237 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.

What does fault code U1237 mean ? What does a diagnostic reading U1237 mean ? How to fix OBD2 Code U1237 ? What do we know about U1237 code ?

How to Clear U1237 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.