C1986 Trouble Code

View C1986 obd/2 error code description and symptoms. C1986 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.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C1986 Error Code Repair Process :

The scent may C1986 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such C1986, so if the inside of your car idle control system rpm higher than expected as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

C1986 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.

Common Causes of C1986

A common cause of code C1986 is the failure of Idle Control System RPM Higher Than Expected, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty ignition coil (s)
Clogged or faulty fuel injector (s)
Exhaust gas leaks

C1986 code for all cars

You can view according C1986 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C1986 Daihatsu Copen

+C1986 Ford Transit

+C1986 Mercedes-benz 600

+C1986 Geely Haoqing

+C1986 Ford Thunderbird

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

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