Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2012A4 SEDAN (8K2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSERVICE AND REPAIRGENERIC SCAN TOOL
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)
Generic Scan Tool
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)SECTION Generic Scan Tool
Ignition System Overview
1 Knock Sensor (KS) 1 (G61)
• Contacts gold plated
• Removing and installing, refer to => [ Knock Sensor 1 (G61) ] Service and Repair
2 Ignition Coil with Power Output Stage
• Ignition coil 1 with power output stage (N70)
• Ignition coil 2 with power output stage (N127)
• Ignition coil 3 with power output stage (N291)
• Ignition coil 4 with power output stage (N292)
• Removing and installing, refer to => [ Ignition Coils with Power Output Stages ] Service and Repair
• To remove, use the ignition coil puller (T40039)
3 Spark Plug
• 30 Nm
4 Bolt
• 20 Nm
• The tightening specification affect how the knock sensor functions
5 Bolt
• 10 Nm
6 Camshaft Position (CMP) Sensor (G40)
• Contacts gold plated
7 O-ring
• If damaged, replace O-ring
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.