P1678 Trouble Code

View P1678 obd/2 error code description and symptoms. P1678 engine photo

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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P1678, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P1678 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

P1678 Error Code Repair Process :

The rule of P1678 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of scp (j1850) single ended (-) circuit failure. Likewise, overriding the OBD P1678 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

P1678 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P1678

A common cause of code P1678 is the failure of SCP (J1850) Single Ended (-) Circuit Failure, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Exhaust tube
Fuel Injectors circuit poor electrical connection
Open VPWR circuit

P1678 code for all cars

You can view according P1678 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P1678 Vauxhall Ventora

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

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