I had the same code on my 2007 Mazda 3. I have seen a lot of bad things when it comes to trusting others, even so-called professionals, with your vehicle. Before you replace the mass air flow sensor, know that it can be cleaned using mass air flow sensor cleaner. Your answer was all over the board, it might be this or it might be this, some of it would have nothing to do with the problem. Additional fuel is indicated by fuel trim values that are above 0%. P2189 will be Bank 2 at idle.
Though I am pretty unskilled at finding a vacuum leak, so I could've missed it. What are the common causes of code P2187? When someone posts, I don't know if you are Mario Andretti, just some novice or somewhere in between. I'm assuming and hopefully optimistic that one is leading to the other codes. Was each cylinder's rpm drop within the same value? But the false air remains to be corrected. Read more: Check all the bolts holding the plenum, and anything else concerned with air intake.
Clean the element with an approved solvent, refit the sensor, but make sure there are no vacuum leaks at any connection in the inlet tract. Be aware though that while low fuel pressure can contribute to code P2189, this condition will almost always be indicated by a code other than P2189. The image below shows typical damage in an inlet boot caused by hardening of the boot. Or, neither are true and your O2 sensor is not reporting the ratio correctly. The oil level should be between the min. You replaced the plug and now that new spark plug is able to fire the lean mixture. It should, however, still be addressed as soon as possible.
Trouble Code Fault Location Probable Cause P2189 System too lean at idle, bank 2 Fuel pressure, injectors, intake leak We recommend What Does Code P2189 Mean? This type of damage is a major cause of vacuum leaks that lead to code P2187 being set. In some cases, there may be no symptoms present other than a stored trouble code and an illuminated warning light. Then, the mechanic clears the code before re-running a diagnostic scan and test driving the vehicle to ensure the issue has been satisfactorily resolved. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another. Consult the manual for the application being worked on for detailed information on the possible long-term effects of not correcting all, or some code-setting conditions. What are the common causes of code P2189? Can I get the code to reset if I disconnect the neg batt terminal? Ice formation is caused by condensation freezing at the base of the throttle body with additional collection.
In troubleshooting the P2187 code, however, this length of time can be particularly long due to the long list of potential culprits. That's the problem with alot of dealers today, they just keep changing parts till they finally get it right. Rescan the system to see if the code returns. I checked around the throttle body to see if it was either of the two vacuum lines referenced above. Need help with a P2177 code? Rescan the system after the gasket replacement to see if the code returns.
This can be addressed by using fuel injector cleaners on the intake or gas tank. Hg to the manifold side of the valve Does the valve hold vacuum? This information can be of use both should an intermittent fault be diagnosed later on, and when several other codes are present, to assist in pinpointing some causes of P2187. Note that this is a rare event and the fault must be sought elsewhere before any controller is replaced What are the symptoms of code P2189? Also, try cleaning the Throttle Body Injector with cauberator cleaner or tbi injector. What the P2187 code means The P2187 trouble code means there is an issue with the vehicle that is causing a lean fuel mixture. What repairs can fix the P2187 code? Contact YourMechanic to be connected with a knowledgeable vehicle technician in your area. Rescan the system to see if the code returns.
If that doesn't help, try running a higher octane fuel, about 93 octane minimum. I also tried to find a vacuum leak with a propane torch and unable to find one. Then, takes note of all codes present and record the freeze frame data associated with the codes. What causes the P2187 code? It is therefore imperative that the testing procedure only be carried out with good quality test equipment and in strict accordance with the instructions provided in the manual. I am trying a new gas cap. Consult the manual on the correct procedure to replace inlet manifold gaskets.
I put new gas cap on that I bought from mazda. This leads to misdiagnosis and may not actually repair the vehicle, which wastes both time and money. These cleaners are added to the intake or gas tank and used to clean the varnish out of the fuel system. The failsafe mode will remain on until normal operation is detected or the code is repaired. I am not knocking you and I appreciate your input.