C3930 Mazda Mx-5 OBD Code

OBD/2 C3930 error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code C3930

Circuit High Input codes like C3930 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

C3930 Mazda Mx-5 Error Code Repair Process :

If your vehicle failed a C3930 test and the C3930 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses air suspension rear height sensor low signal circuit open a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look air suspension rear height sensor low signal circuit open: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

Common Causes of Mazda Mx-5 C3930 OBD2 Code

A common cause of code C3930 is the failure of Air Suspension Rear Height Sensor Low Signal Circuit Open, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty starter motor
Improper ignition timing
Faulty Intake Valve Timing Control Solenoid Valve

C3930 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.

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

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C3930 Mazda Mx-5 OBD Code

C3930 Mazda Mx-5 Error Code Repair Process :

Common Causes of Mazda Mx-5 C3930 OBD2 Code

C3930 code for other Mazda cars