Maserati p0491. Messages about the air .
Maserati p0491. ” This is logged when the powertrain control module (PCM) detects that the secondary air injection system isn’t supplying enough air to the bank 2 side of the engine. Sep 22, 2024 · Yeah, I don't think a bump in the road is causing thatStart with P0491 and the P0492You just can't diagnosis cars like that via the internetStart with those faultsYour air injection system isn't working correctlyYou have a pump, a relay, vacuum lines etc May 3, 2025 · Can engine air filter cause P0491 P0492 air flow errors? Jump to Latest 273 views 5 replies 4 participants last post by Sock Tucker 4d ago M Nov 24, 2023 · P0491 Meaning P0491 is a code related to your car’s emissions system, specifically the part that injects air into the exhaust to reduce pollution. P0491…and then a P0492. ” This code is logged once the PCM determines that the secondary air flow in bank 1 is too low. Is it safe to Nov 11, 2018 · I assumed it was one of the O2 sensors but the DTC's P0491 & P0492 came up. From reading on here it seems this could be due to a loose connection on a vacuum line? I did have Jul 20, 2009 · "P0491 - Secondary Air System Bank 1" is the code & description coming off my OBDII scanner. More specifically, it points to insufficient flow in Bank 1 of your engine. Diagnosing this 2014 Maserati Quad GTS code P0496 Evaporative Emission System High Purge Flow code on my diagnostic tool. What the P0491 code means The secondary air injection system utilizes ambient air, injecting it into the exhaust, thereby diluting the mixture and facilitating lower emissions production. This is to warm up the catalytic converter and handle certain . P0492 - S. Is this normal? Oct 17, 2017 · P0491 and po492 secondary air injection system insufficient flow bank 1 and 2 Jump to Latest 5. Diagnosing this See full list on obd2pros. I used my old scantool and I got the permanent codes P0491 and P0492 (air system insufficient flow). While it doesn’t usually cause immediate driving issues, it’s important for reducing emissions and should be fixed to keep your car running cleanly and efficiently. C - below minimum Threshold " "RH bank secondary air system (insufficient flow). Workshop told me it could be manifold intake gasket damaged when removing the manifold. . . Anyone come across this Apr 26, 2020 · From time to time I will get 2 error messages at the same time, P0491 and P0492 “Secondary Air Injection System Insufficient Flow” both banks, suggesting its the Secondary air pump, or pipe leading to it. This system plays a critical role in minimizing emissions during cold starts. The secondary air injection system helps your engine handle emissions. For bank #2, see code P0492. I am not sure what I should be looking at. Car is running fine but it may come back. The oxygen sensors are looking for a leaner mixture caused by the air being injected into the exhaust and are not seeing it and setting the codes. Now the codes come back every 150 miles or so and I know they are no longer an issue so I just clear them out for a temporary solution. An illuminated check engine light and unusual noises coming from the air pump are some of the symptoms associated with this Aug 7, 2019 · Hello group, I have a 2006 GS with 80,000 miles and driven regularly (and aggressively! ) The Check Engine Light is on; the OBDII codes are P0491 and 492. Can anyone explain what is going on or advice on what I should do? Dec 19, 2024 · The P0492 code stands for “Secondary Air Injection System Insufficient Flow (Bank 2). This is a component of the exhaust system, where oxygen from the outside reaches the exhaust after a cold start. Here’s what you need to know about issues with that system. Apr 3, 2017 · P0491 and P0492 indicate that you have insufficient air injection flow into the exhaust manifolds. Jan 31, 2025 · What does the P0491 code mean? The P0491 code is a diagnostic trouble code (DTC) indicating an issue with the secondary air injection system. Anyone run across this before? Is the car safe to drive still? Aug 16, 2024 · Diagnostic trouble code (DTC) P0491 stands for “Secondary Air Injection Insufficient Flow Bank 1. GND/O. Any thoughts as to what I should check and where to look for common errors. Last year it popped up with P0491 and P0492 codes. the result showed : "LH bank secondary air system (insufficient flow). The fact that it is the same code set on both sides indicates that it is a problem common to both sides. This feature plays a crucial role in reducing emissions by introducing fresh air into the exhaust stream during cold starts. Other secondary air injection system trouble codes include P0410, P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, and P0492. I had error codes p0491 and p0492 appear last week and the garage stated that it was related to the secondary air system. 1K views 1 reply 2 participants last post by SweetMaseratiSound Jun 17, 2018 M Apr 16, 2024 · Analyze the P0491 code for insufficient air flow in your secondary air injection system to uncover potential issues - your system's health depends on it. Guru in Atlanta of Jaguar V12 & XJS cars. By injecting air into the exhaust stream, it helps burn off excess fuel and reduces harmful Nov 24, 2023 · P0491 Meaning P0491 is a code related to your car’s emissions system, specifically the part that injects air into the exhaust to reduce pollution. A lot of faults on Apr 8, 2012 · I googled The P0492 code is: Secondary Air flow insufficient. Check the secondary air pump. I went to my friends shop here in pittsburgh to check it then we cleared it. Today I was checking some of the vacuum lines and realized the secondary air pump was leaking a good amount of air from the sides. My question is, am I safe to continue to drive the car without fear of the engine going bang!? I have removed all the Nov 16, 2024 · P0491 code signals a problem with the secondary air injection system. Bank 1 refers to the side of the engine where cylinder #1 is located. Are there any common issues I should check? Mar 30, 2016 · Hi All, I am a relatively new Grantourismo owner and this is my first post on the forum. A clogged or disconnected vacuum hose, faulty secondary air pump control valve, electrical issues, and obstructed air injection passages Mar 27, 2025 · "Secondary Air Injection System Insufficient Flow Bank 1" Did a battery reset at first but it came back again after 2 weeks. C - 2017 GT Sport. Jun 2, 2023 · I just started driving this car and about 5 minutes into my drive I got a check engine light. AIR System Insufficiency Flow Bank 1 & 2. I've reset it twice with it only to come back after the drive cycle was completed. Jul 6, 2018 · Hello, Following an engine alarm on the dashboard, I went to the workshop and run a diagnostic. Maserati part #181197 May 31, 2023 · ASE Master Tech. P0491. Messages about the air If you have a P0491 or P0492 fault code cause a check engine light on your Maserati Granturismo then it may be a simple fix just like mine. P0491 - S. I took it to the dealership and they fixed the issue. P0491 code definition This is the OBD-II code for Secondary Air Injection System Insufficient Flow Bank 1, indicating a problem on the side of the engine which contains cylinder #1. 33 years experience Ferrari, Maserati, Land Rover, & Jaguar technician. Jun 28, 2013 · Threw a code today. C. Bank #1 is the side of the engine with cylinder #1. Says its the secondary air injection system. There is a vacuum solenoid valve that Jun 25, 2023 · My GT threw a code twice this week. cleared them with no issues…what can cause this to happen? Could it be fuel/ gas? Abel Aug 5, 2024 · Hi fellow Maserati lovers, I've owned 3 Maserati GTs and the latest has thrown codes P0491 and P0492 which I understand is something to do with the Secondary Air Injection. com The P0491 code tell there is a fault with the system – usually that the secondary air flow is too low on bank 1. It means there’s not enough air flow in part of this system. Should I get them to refit the gaskets or buy new ones? Jan 17, 2025 · How to fix CEL code P0491 Secondary Air Injection System Insufficient Flow Bank 1 (2016 453)? 2016 smart car 453 check engine light p0491 1 reading Jump to Latest Mar 18, 2023 · The secondary air injection system insufficient flow bank 1 code is the code P0491 and sometimes P0492. It means the secondary air injection (SAI) system (in the engine side containing cylinder 1) is malfunctioning. Aug 8, 2018 · With that being said: I recently threw a p0491 & p0492 code. cb m6z t5y ypit zvb w451jwk iu7 f1p4 o3uz y3gq