P0316 Code: Meaning, Causes, Symptoms, & Fixing

The misfiring is very dangerous for your vehicle engine. The misfiring most commonly takes place when the air-fuel mixture reaction doesn’t burn properly into your combustion chamber. When your powertrain control module (PCM) detects misfiring, it triggers a trouble code according to the misfiring cylinder. When your engine detects misfiring at the vehicle’s start-up, it triggers the P0316 code. This article explains the P0316 code meaning, causes, and symptoms.

P0316 Code Definition

The P0316 code stands for “Engine Misfire Detected on Startup (First 1000 Revolutions).”

What Does the P0316 Code Mean?

The P0316 trouble code indicates that your powertrain control module (PCM) detects engine misfiring during the first 1,000 revolutions after starting. 

In simple words, the PCM triggers the P0316 code when it monitors that the position of the camshaft or crankshaft is not within the specified limit, which may cause the misfiring upon starting. 

P0316 code

The PCM of your vehicle utilizes the data of the camshaft position sensor, crankshaft position sensor, and engine speed to regulate the fuel delivery and ignition timing. When any of these parts are not within the prespecified parameters, they may cause engine misfiring. 

Your vehicle’s PCM/ECM can disable the misfiring cylinder to avoid engine damage. The misfiring is very dangerous for your vehicle engine. It may badly damage the engine parts or engine. Therefore, when your vehicle engine starts misfiring, you should fix it as soon as possible to prevent an expensive repair.

There are many factors that may lead to misfiring, such as bad ignition coils, bad spark plugs, damaged crankshaft, damaged camshaft, or insufficient fuel.

Causes of the P0316 Code

Symptoms of the P0316 Code

  • Illuminated check engine light
  • Rough idle
  • Hard to start the engine
  • Engine consumes more fuel than usual
  • A reduction in the engine performance
  • Engine misfires 

How to diagnose the P0316 Code?

  • Verify the presence of the P0316 code by using an OBD-II scanner.
  • Utilize the freeze data to find out the main cause of the code.
  • After freeze data analysis, clear the PCM memory, and test drive the vehicle. If the code still exists, perform further inspection.
  • Check the electrical wires and other parts for wear or damage.
  • Properly examine the service record of your car to ensure all maintenance and tune-ups are up-to-date.
  • Properly inspect the quality of the fuel. Your fuel must be contaminated-free.
  • Check the spark plugs for damage by changing them from one cylinder to another to verify if a certain cylinder is misfiring.
  • Check the fuel level in the fuel tank.
  • Inspect the ignition coils and fuel system for damage or leak.
  • Check the fuel pressure by using a pressure gauge.
  • Check fuel conditions for a lean fuel condition, which may be caused by the low fuel pressure.
  • If your air-fuel mixture is lean, check for a vacuum leak.
  • Inspect the fuel injector for damage.
  • Check the functionality of the EGR valve.
  • Inspect the catalytic converter for a blockage.
  • Use an inline spark tester at each individual cylinder to examine for proper ignition system function.
  • Inspect the camshaft and camshaft position sensor for damage. 
  • Check the functionality of the crankshaft position sensor.
  • Perform a compression test if you still are unable to find the problem. This test reveals the internal engine damage if there is any.

Common P0316 Code Diagnostic Mistakes

  • Unnecessary replacement of ignition system components. 
  • Replacing the camshaft position sensor or crankshaft position sensor before inspecting the wiring and connections.
  • Not clearing the powertrain control module (PCM) after fixing the issue
  • Not checking the fuel condition before replacing the ignition system components.

What repairs can fix the P0316 Code?

  • Replacing the faulty crankshaft position sensor
  • Replacing the bad camshaft position sensor
  • Adding more fuel into the fuel tank if needed
  • Replacing the damaged or faulty spark plugs
  • Replacing the dirty fuel
  • Repairing damaged wires or loose connections
  • Replacing the faulty fuel injector
  • Repairing or replacing the faulty EGR system
  • Cleaning the clogged fuel lines
  • Replacing the bad catalytic converter
  • Fixing the vacuum leaks
  • Fixing the faults related to the PCM

Repair Costs for P0316

To fix the P0316 code, you need to repair one or more of the below-given parts. The estimated cost of each part is given below:

PartsCost
Spark plug wiring repair$170 to $250
Ignition coil replacement$220 to $650
Vacuum leak repair$90 to $210
Fuel pump replacement$250 to $1,090
Fuel injector replacement$1400 to $2000
Fuel pressure regulator$190 to $410
Spark plug replacement$60 to $260

FAQ Section

How serious is the P0316 code?

The P0316 trouble code is considered to be very serious, mainly because this trouble code is indicative of a mechanical or electrical problem that typically worsens over time.

This trouble code mainly indicates engine misfiring, which is very dangerous for your engine. The misfiring may produce various drivability issues, such as poor fuel economy, poor acceleration, and/or reduction in engine performance. 

In some cases, an unrepaired misfire may cause another mechanical failure. For example, a bad ignition system that results in a misfire, if not fixed quickly, can result in downstream fuel over-metering. As a result, it can severely damage the catalytic converter, which is very expensive to replace.

Therefore, as your vehicle triggers the P0316 code, you should stop driving and fix it as soon as possible.

How to fix the P0316?

To fix the P0316 code, you need to repair or replace one or more of the following parts:

  • Fixing the vacuum leaks
  • Replacing the faulty crankshaft position sensor
  • Adding more fuel into the fuel tank if needed
  • Replacing the damaged or faulty spark plugs
  • Replacing the bad camshaft position sensor
  • Replacing the dirty fuel
  • Repairing damaged wires or loose connections
  • Replacing the faulty fuel injector
  • Cleaning the clogged fuel lines
  • Repairing or replacing the faulty EGR system
  • Fixing the faults related to the PCM
  • Replacing the bad catalytic converter
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