P0691 Trouble Code

View P0691 obd/2 error code description and symptoms. P0691 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.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
Time
Cost Prediction : $ 70-120

P0691 Error Code Repair Process :

For p0691 cooling fan 1 relay control circuit low check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P0691 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks p0691 cooling fan 1 relay control circuit low with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool P0691 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 P0691

A common cause of code P0691 is the failure of P0691 Cooling Fan 1 Relay Control Circuit Low, but there are several other possible causes as well, such as ;

P0691 code for all cars

You can view according P0691 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P0691 Infiniti Qx56 +P0691 Renault Optima +P0691 Volvo 850 +P0691 Bmw 328 +P0691 Chevrolet Caprice

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

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