Fault code P0316 – a step-by-step guide to diagnosing and fixing it

Error code P0316 is displayed and the check engine light is on - what does this mean?

The DTC P0316 is recognized by the OBD system if a misfire is detected within the first 1000 engine revolutions after a cold start. This fault code indicates combustion problems in one or more cylinders during the critical warm-up phase. The exact definition may vary slightly between manufacturers, but the basic fault remains the same.

What can cause this error code?

• Defective spark plugs or worn electrodes
• Damaged ignition coils or ignition cables
• Clogged or defective fuel injectors
• Low fuel pressure or defective fuel pump
• Dirty or defective mass air flow sensor
• Leaking intake manifold or vacuum lines
• Defective camshaft sensors or crankshaft sensors
• Worn valves or valve guides
• Defective engine control unit (ECU)
• Low quality or contaminated fuel

What symptoms occur in parallel with fault code P0316?

• Starting problems: The vehicle is difficult to start or requires several attempts to start
• Engine running unsteadiness: Irregular idling and jerky engine at cold start
• Loss of power: Reduced engine power, especially in the first few minutes after starting
• Increased fuel consumption: Poor fuel efficiency due to incomplete combustion
• Black or white smoke: Unusual exhaust gas color during cold start
• Knocking noises: Metallic noises from the engine compartment during the warm-up phase

How to fix the problem of error code P0316?

• The repair requires a systematic diagnosis to identify the exact cause.
• Check the spark plugs and replace them completely if they are worn or damaged, making sure they have the correct heat value
• Test ignition coils with a multimeter or oscilloscope and replace defective coils individually
• Have fuel injectors professionally cleaned or replace if irreparably damaged
• Measure fuel pressure with a pressure gauge and replace fuel pump or filter if there are deviations
• Clean mass air flow sensor with special cleaner or replace with original part if defective
• Check vacuum lines and intake manifold for leaks and seal damaged parts
• Check camshaft and crankshaft sensors for correct signals and replace defective sensors
• Carry out compression test and have valves or piston rings repaired if values are low