1. The terminals on the battery terminals are not tightened sufficiently or are oxidized (see "Battery - Maintenance").
2. The battery is discharged or faulty (see "Battery - Maintenance").
3. The starter electrical circuit is faulty (see "Starter").
4. The starter drive components are faulty (see "Starter - repair").
5. The starter traction relay is faulty (see "Starter - repair").
6. The electric motor is faulty (anchor, windings, brush assembly) starter (see "Starter - repair").
7. The ignition switch (lock) is faulty (see "Ignition switch (lock) - check").
8. The flywheel ring gear is damaged or worn (see "Flywheel - removal and installation").
2. The crankshaft rotates, but the engine does not start
1. There is no fuel in the tank (fill the tank with fuel).
2. The crankshaft does not rotate fast enough to start the engine due to a low battery charge (see "Battery - Maintenance").
3. The terminals on the battery terminals are not tightened sufficiently or are oxidized (see "Battery - Maintenance").
4. Leaks in fuel system components, faulty fuel module or fuel pressure regulator (see "Power supply system").
5. The timing belt is broken (see "Timing Belt - Checking Condition and Adjusting Tension").
6. The engine management system is faulty (see "Engine management system").
7. The electrical circuit of the ignition coil (module) is faulty (see "Engine Ignition Module 2112 (1.5i 16V) - Checking and Replacing", or "Ignition coils of engine 21124 (1.6i 16V) - checking and replacement", or "Ignition module (coil) for engines 2111 and 21114 (8V) - checking and replacement").
8. The crankshaft position sensor or its electrical circuit is faulty (see "Crankshaft Position Sensor - Checking and Replacing").
3. Difficulty starting a cold engine
1. The battery is discharged or the electrolyte level is insufficient (see "Battery - Maintenance").
2. The power supply system is faulty (see "Power supply system").
3. The engine management system coolant temperature sensor is faulty (see "Coolant Temperature Sensor - Checking and Replacing").
4. Fuel injectors are leaking (see "Injectors - check").
5. The engine management system is faulty (see "Engine management system").
4. Difficulty starting a warm engine
1. The air filter is clogged (see "Air filter - replacing the filter element").
2. The power supply system is faulty (see "Power supply system").
3. The terminals on the battery terminals are not tightened enough or are oxidized, poor contact in the battery connection to the ground (see "Battery - Maintenance").
4. The engine management system coolant temperature sensor is faulty (see "Coolant Temperature Sensor - Checking and Replacing").
5. The starter operates with a loud noise (grinding)
1. The flywheel ring gear is damaged or worn (see "Flywheel - removal and installation").
2. The starter mounting bolts are loose (see "Starter - removal and installation").
6. The engine starts but stops immediately
1. The electrical connections of the ignition coil (module) are loose or damaged (see "Engine Ignition Module 2112 (1.5i 16V) - Checking and Replacing", or "Ignition coils of engine 21124 (1.6i 16V) - checking and replacement", or "Ignition module (coil) for engines 2111 and 21114 (8V) - checking and replacement").
2. Insufficient pressure in the engine fuel system (see "Fuel rail - checking operating pressure").
3. The connections of the intake manifold parts are not tight (see "Power supply system").
4. The engine management system is faulty (see "Engine management system").
7. Oil stains appear under the engine
1. The oil pan gasket is not tight or the drain plug is not tightly tightened (see "Engine oil pan - removal and installation, gasket replacement").
2. The seal of the oil pressure warning lamp sensor is damaged (see "Engine Oil Pressure Sensor - Replacement").
3. The cylinder head cover seal is not tight (see "Cylinder head cover for engines 2112 and 21124 (16V) - removal and installation" or "Cylinder head cover for engines 2111 and 21114 (8V) - removal and installation, gasket replacement").
4. The crankshaft seals are worn or damaged (see "Front Crankshaft Oil Seal - Replacement" and "Rear Crankshaft Oil Seal - Replacement").
8. Engine speed at idle speed decreases and then increases
1. Vacuum hose connections are not tight (check the tightness of the fittings).
2. The air filter is clogged (see "Air filter - replacing the filter element").
3. Insufficient fuel pressure in the engine fuel system (see "Fuel rail - checking operating pressure").
4. The cylinder head gasket is damaged (see "Cylinder head of engines 2112 and 21124 (16V) - removal and installation" or "Cylinder head of engines 2111 and 21114 (8V) - removal and installation").
5. Wear of the timing belt and/or tension roller (see "Timing Belt - Checking Condition and Adjusting Tension").
6. Wear of the camshaft cams (see "Camshafts of engines 2112 and 21124 (16V) - removal and installation", or "Camshaft of engines 2111 and 21114 (8V) - removal and installation").
9. Misfiring at idle
1. The spark plugs are faulty or the gap between the electrodes is set incorrectly (see "Spark plugs for engines 2112 and 21124 (16V) - replacement" or "Spark plugs for engines 2111 and 21114 (8V) - replacement").
2. High-voltage wires are faulty (see "High-voltage wires of the 2112 engine (1.5i 16v) - checking and replacement", or "High-voltage wires of engines 2111 and 21114 (8v) - checking and replacement").
3. Vacuum hose connections are not tight (check the tightness of the fittings).
4. The ignition coil (module) is faulty (see "Engine ignition module 2112 (1.5i 16v) - check and replacement", or "Ignition coils of engine 21124 (1.6i 16v) - checking and replacement", or "Ignition module (coil) for engines 2111 and 21114 (8v) - checking and replacement").
5. Insufficient compression in the engine cylinders (see "Checking the compression in the engine cylinders").
6. The fuel injectors are faulty (see "Injectors - check").
10. Misfires when the engine is running under load (while the car is moving)
1. The fuel filter and/or engine fuel system lines are clogged (see "Power supply system").
2. The fuel injectors are faulty (see "Injectors - check").
3. The spark plugs are faulty or the gap between the electrodes is set incorrectly (see "Spark plugs for engines 2112 and 21124 (16v) - replacement" or "Spark plugs for engines 2111 and 21114 (8v) - replacement").
4. The insulation of high-voltage wires is damaged (see "High-voltage wires of the 2112 engine (1.5i 16v) - checking and replacement" or "High-voltage wires of engines 2111 and 21114 (8v) - checking and replacement").
5. The engine management system is faulty (see "Engine management system").
6. Insufficient compression in the engine cylinders (see "Checking the compression in the engine cylinders").
7. Leakage (burnout) of the valves of the gas distribution mechanism (see "Cylinder head - check").
8. The ignition system is faulty (see "Engine management system").
9. Vacuum hose connections are not tight (check the tightness of the fittings).
11. The engine does not develop full power
1. Wear of the camshaft cams (see "Camshafts of engines 2112 and 21124 (16v) - removal and installation", or "Camshaft of engines 2111 and 21114 (8v) - removal and installation").
2. Leakage (burnout) of the valves of the gas distribution mechanism (see "Cylinder head - check").
3. Incorrect installation of valve timing (see "Timing Belt - Replacement").
4. The ignition system is faulty (see "Engine management system").
5. The engine power supply system is faulty (see "Power supply system").
6. The air filter is clogged (see "Air filter - replacing the filter element").
7. Jamming of the working cylinders of the brake mechanisms (see "Brake system - checking technical condition").
8. The clutch slips (see "Clutch - checking technical condition").
9. The fuel filter and/or engine fuel system lines are clogged (see "Power supply system").
10. The engine management system is faulty (see "Engine management system").
11. Insufficient compression in the engine cylinders (see "Checking the compression in the engine cylinders").
12. The exhaust system is faulty (see "Exhaust system").
12. When the engine is running, the oil pressure warning light comes on
1. Insufficient oil level (see "Lubrication system - checking the oil level").
2. Idle speed is below normal (see "Engine management system").
3. Short circuit in the "sensor - control lamp" circuit (see electrical diagrams).
4. The oil pressure warning light sensor is faulty (see "Engine Oil Pressure Sensor - Replacement").
5. Wear of the main bearings of the crankshaft and/or oil pump (see "Engine cylinder block - checking the technical condition, removal and installation", and "Oil pump - removal, disassembly, assembly and installation").
13. Glow ignition (the engine continues to run for some time after the ignition is turned off)
1. High idle speed (see "Engine management system").
2. Engine overheating (see "Cooling system - technical condition check").
3. Carbon deposits on valves and in combustion chambers (see "Cylinder head - check").
14. Increased fuel consumption
1. The air filter is clogged (see "Air filter - replacing the filter element").
2. The engine management system is faulty (see "Engine management system").
3. The fuel injectors are faulty (see "Injectors - check").
4. Insufficient air pressure in the tires (see "Tires - Checking Pressure").
15. Fuel leaks and/or the smell of gasoline
1. Leaky fuel lines (see "Power supply system").
2. The fuel tank is overfilled (remove excess fuel).
3. Leaky fuel injectors (see "Injectors - check").
16. Engine overheating
1. Insufficient coolant level in the cooling system (see "Cooling system - technical condition check").
2. Coolant pump malfunction (see "Coolant pump - replacement").
3. The engine cooling system radiator is clogged (see "Radiator of the cooling system - removal and installation").
4. The thermostat is faulty (see "Thermostat - checking without removal").
5. The electric fan of the engine cooling system is faulty (see "Electric fan - removal, disassembly and installation").
6. The valves in the expansion tank cap are faulty (replace the lid).
17. The battery does not charge
1. The alternator drive belt is worn out or not sufficiently tensioned (see "Generator Drive Belt - Checking Condition and Adjusting Tension").
2. Low electrolyte level in the battery (see "Battery - Maintenance").
3. The terminals on the battery terminals are not tightened sufficiently or are oxidized (see "Battery - Maintenance").
4. The generator is faulty (see "Generator - check without removing from the car").
5. The battery charging circuit is faulty (see electrical diagrams).
6. Short circuit in one of the electrical equipment circuits (see electrical diagrams).
7. The battery is faulty (see "Battery - Removal and Installation").
18. The battery charge indicator lamp does not go out after starting the engine
1. The generator is faulty (see "Generator - check without removing from the car").
2. The battery charging circuit is faulty (see electrical diagrams).
3. The alternator drive belt is worn out or not sufficiently tensioned (see "Generator Drive Belt - Checking Condition and Adjusting Tension").
4. The voltage regulator is faulty (see "Voltage Regulator and Capacitor - Checking and Replacing").
19. The battery charge indicator lamp does not light when the ignition is turned on
1. The indicator lamp has burned out (see "Instrument cluster - bulb replacement").
2. The electrical circuit of the generator excitation winding is faulty (see "Generator").
20. The clutch is slipping (the engine speed increases, but the car does not accelerate)
1. Oil getting on the working surfaces of the driven disk (see "Clutch - checking technical condition").
2. Severe wear, warping and burning of the driven disk linings (see "Clutch - checking technical condition").
21. Gear shifting is difficult or impossible
1. The gear shift drive adjustment is disturbed (see "Gear shift mechanism drive - removal, installation and adjustment").
2. The tightening of the nuts securing the gear shift lever support has become loose (see "Gear shift mechanism drive - removal, installation and adjustment").
3. The gear shift drive rod is deformed (see "Gear shift mechanism drive - removal, installation and adjustment").
4. Breakage or wear of plastic parts of the shift mechanism (see "Gear shift mechanism drive - removal, installation and adjustment").
22. Knocking (clicking) when turning the car at low speed
1. Wear of outer constant velocity joints (see "Front wheel drives - technical condition check").
2. Loosening of front suspension fasteners (see "Front suspension - technical condition check").
3. Loosening of steering fasteners (see "Steering - checking technical condition").
4. Failure of differential parts (see "Gearbox - technical condition check").
23. Vibration when driving at high speed (over 90 km/h)
1. The front wheels of the vehicle are out of balance (see "Hubs, disks and tires - technical condition check").
2. The geometry of the tires or wheel rims is damaged due to deformation (see "Hubs, disks and tires - technical condition check").
3. Wear of constant velocity joints of front wheel drives (see "Front wheel drives - technical condition check").
24. Deviation of the vehicle from straight-line movement
1. Different tire pressures on the front wheels (see "Tires - Checking Pressure").
2. Different degrees of wear of the front tires (see "Hubs, disks and tires - technical condition check").
3. Breakage of one of the front suspension springs (see "Front suspension - technical condition check").
4. The front wheel alignment angles are out of adjustment (see "Front Wheel Alignment - Check").
5. Braking of one of the wheels of the car (see "Brake system - checking technical condition").
25. Vehicle drift when braking
1. Different tire pressures on the front wheels (see "Tires - Checking Pressure").
2. One of the brake mechanisms is faulty (see "Brake system - checking technical condition").
3. The hose or pipeline of one of the brake mechanisms is pinched (see "Brake system - checking technical condition").
4. Different degrees of wear of the brake mechanism parts of one of the vehicle axles (see "Brake system - checking technical condition").
26. Uneven tire wear
1. Wheel alignment is out of adjustment (see "Front Wheel Alignment - Check").
2. Suspension springs are faulty (see "Front suspension - technical condition check" and "Rear suspension - technical condition check").
3. The balance of one or more wheels is disturbed (see "Hubs, disks and tires - technical condition check").
4. The vehicle is overloaded or unevenly loaded (unload the car).
27. Excessive steering play
1. Wear of hub bearings (see "Hubs, disks and tires - technical condition check").
2. Failure of the steering rod ends (see "Steering - checking technical condition").
3. Play in the steering mechanism (see "Steering - checking technical condition").
28. Individual headlights or taillights do not turn on
1. The lamp filament has burned out (see "External lighting, light and sound signaling").
2. The lamp contact in the socket is oxidized (see "Outdoor lighting, light and sound signaling").
3. The wires are damaged or the tips in their connections are oxidized (see electrical diagrams).
29. Individual headlights or taillights burn at half power
(The text is copied from the online resource: www.VAZbook.ru)
1. Poor contact or damage to the wire connecting the lamp (flashlight) to the ground (see "Outdoor lighting, light and sound signaling").
2. Darkening the lamp bulb (see "Outdoor lighting, light and sound signaling").
30. The car door does not unlock
1. The water in the lock cylinder froze (in winter) (see "Body maintenance").
2. The lock cylinder is dirty (see "Body maintenance").
3. The cylinder mechanism of the lock is damaged (see "Front door lock switch (cylinder) - removal and installation", And "Tailgate lock switch (cylinder) - removal and installation").
31. Water penetrates into the cabin
1. The door opening seal is not tightly fitted or is damaged (correct or replace the seal).
2. The position of the door in the body opening is not adjusted (see "Front door - removal and installation", "Rear door - removal and installation", And "Tailgate - Removal and Installation").
32. Knocking doors when the car is moving
1. Wear of the pins in the door hinges (see "Front door - removal and installation", "Rear door - removal and installation", And "Tailgate - Removal and Installation").
2. The door lock mounting screws are not tightened (see "Front door lock - removal, installation and adjustment", "Rear door lock - removal, installation and adjustment", And "Tailgate Lock - Removal and Installation").
33. The door lock does not lock
Seizure of moving parts of the lock due to dirt or lack of lubrication (see "Body maintenance").
34. The hood lock does not open
1. Breakage of the lock drive rod (see "Hood Lock Drive Rod - Lubrication and Replacement").
2. The rod length adjustment is not correct (see "Hood Lock Drive Rod - Lubrication and Replacement").
35. The luggage compartment door does not stay open
One or both gas struts are faulty (see "Gas struts for the tailgate - removal and installation").