U3985 DTC For Fiat Grand Break

Fiat Grand Break Engine Specifications:
Engine Type :Single Cylinder Engine
Cylinder Type :Opposite Piston Engine
Engine Air Intake Process :Naturally Aspirated

Your Fiat Grand Break engine control system detects a problem, the computer stores the diagnostic trouble code U3985 in its memory. To figure out what is wrong with your vehicle you must first extract the U3985 DTC For Fiat Grand Break.

To solve U3985 Fiat Grand Break problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

U3985 Fiat Grand Break DTC Meaning

U Network Code - Problem is climate control system, lighting, airbags, etc.
3 SAE - Generic
9 Transmission
8 Crankshaft Position Sensor Circuit Performance
5 Cruise Inhibit Control Circuit

If your vehicle failed a U3985 Fiat Grand Break test and the U3985 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 U3985 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 U3985 DTC For Fiat Grand Break: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

U3984 DTC (Previous DTC Code) ( Next DTC Code ) U3986 DTC
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The listed Fiat models will give information about U3985 DTC.