Polaris rzr code 520344 17, My PSI went from 32 to 58 psi just by replacing o ring Oct 24, 2020 · Code 520344 17 Jump to Latest 8. Jun 17, 2017 · To all rzr owners if your getting the code 520344 17 and your fuel pump still works but runs like crap, replace the O ring on top the fuel pump. Hey, working on a Polaris Ranger 2019 XP 1000, Fires up and runs till about it gets to 100 and then she gives the missfire codes on both on both plugs. Pirate Roadrunner Reply Like M SPN 520344 FMI 17 indicates Adaptive Fuel Correction Too Lean. Check your fuel pressure at the fuel rail. If you installed a charge tube and got this code immediately after starting the machine, you likely have a bad wire to the sensor. It felt like it was running at half power or on one cylinder. Nov 17, 2025 · We’ll cover what the code means, the most common culprits, and how to perform a reliable fix that gets you back on the trail with confidence. If it is in spec then look for exhaust cracks/leaks between the engine and the O2 sensor. Sep 5, 2024 · Get a fuel pressure tester. CHANGE O2 SENSOR. Explore our line of products from powersports to commercial, government & military vehicles. The fuel pressure is good. None are difficult to troubleshoot. Service Manual for testing the O2 sensor. Loose intake manifolds or contaminated fuel can also give this code. 1 day ago · What could be causing erratic stalling issues with code 17-530244 in a brand new Polaris RZR 200 EFI? We pioneer breakthroughs to help people work & play outside. 5K views 5 replies 3 participants last post by Ferguson2015 Nov 3, 2020 F I HAVE A CODE 520344-17 IT RUNS NO POWER. 2017 POLARIS RZR 1000 XP. From everything I read on the internet, a faulty fuel pump (or clogged fuel filter) was the most likely cause with the O2 sensor being a distant second followed by an intake/exhaust leak. Fortunately it did not leave us stranded out in the forest and we we're able to make an easy recovery and drive it on the trailer. How to Locate the Codes on Your Polaris RZR 1000 Most times these codes get thrown from damaged wiring or unseated plugs. Feb 3, 2019 · Our 2016 XP41K threw the exact same code last summer. Nov 4, 2023 · My RZR initially threw the 520344-17 code with about 75 hours on the engine. This code occurs when the ECU has reached its maximum limit for adjusting the closed-loop fuel trims. IT WILL GO THEN LOSERS POWER. Apr 21, 2023 · Doing a Google search for Polaris General diagnostic code 520344 I find issues : faulty O2 sensor, plugged spark arrestor, exhaust leak, intake leak. Mileage was 3725 at the time it occurred. The pressure should be 58psi+/-2.
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