C0738 Railton 20 OBD Code

OBD/2 C0738 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

C0738 Railton 20 Error Code Repair Process :

If your aux heater start counter overrun/system locked (same as below ?) check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0738 and engine control unit are in charge of monitoring a bunch of different aux heater start counter overrun/system locked (same as below ?), and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Railton 20 C0738 OBD2 Code

A common cause of code C0738 is the failure of Aux Heater Start Counter Overrun/System Locked (same as below ?), but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
EVAP system hose leaking
Intake air leaks
Variable Camshaft Timing solenoid stuck open

C0738 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

C0738 code for other Railton cars

You can view according C0738 DTC for your car model. We selected several models to see obd2 solutions click and view it.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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