The list of automotive Makes at the right edge of the screen. Learn what does P0170 means? This information can be of use if an intermittent fault is diagnosed later on. Check all vacuum hoses and confirm none are cracked, disconnected or missing. If the scanner can monitor live data streams, narrow its monitoring function down so that it monitors only the 2 oxygen sensor. The heater element in an oxygen sensor plays a critical role in the overall performance of the sensor, and a bad heater element or heater control circuit can cause wildly inaccurate readings, especially when the sensor is still cold. Bank 1 refers to the bank of cylinders that contains cylinder 1. Step 6 If the fuel lines all check out fine, consult the manual on the correct procedure to test the fuel pressure regulator, which could be located either on the fuel rail, or in the fuel tank as part of the pump canister.
When the check engine light comes Hyundai Accent P0170 code on the first you should check is the gas cap. Evaporative Emission System Switching Valve. These changes are known as negative and positive fuel trim, and in a system where everything works as intended, these changes will occur constantly. Also check ignition coils, cam and crank sensors, and oil sensor for leakage contributing to oil intrusion in wiring harness. This code rarely happens in Asian and American-made cars. If system is in normal condition, pointer of voltmeter indicates a normal pattern. The first diagnostic trouble code or no fault detected will be indicated by the on-board diagnostic lamp.
In conjunction with other problems however, it may lead to various drivability issues. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver. It is worth noting that code P0170 rarely occurs on American or Japanese-made vehicles. Inspect the condition of crankcase vent hose under intake manifold and operation of check valve in the hose. Repair cause of oil leak and replace oil-fouled O2 sensor. Step 7 If despite all attempts to resolve the problem the code persists, or returns sporadically, it is likely that an intermittent fault is present. Also be sure to check the condition of the fuel filter; replace the filter if there is any evidence of it being clogged or dirty.
P0170 Fuel Trim Malfunction Bank 1 The code P0170 means that the air-fuel mixture coming in to the engine is too lean, or too rich. Continue driving and see if the check engine light turns off. If the engine is turbo charged, be sure the hoses are in good condition and have no leaks. Due to the large number of possible causes of P0170, it is recommended that all other codes present be diagnosed and repaired before attempting to repair P0170 to avoid a misdiagnosis. At a steady engine speed, the displayed reading will be somewhere close to the mid-point between a rich- and lean running condition. How do you troubleshoot code P0170? The reading will be different for different automobiles, so get a good spec. Compare obtained values with those stated in the manual, and make suitable repairs if any discrepancies are found.
This code can also mean the fuel trim has reached its limit of adding fuel while it tries to compensate for actual or perceived rich condition. . The sensors have been replaced, fuel caps, intake manifold gaskets, computers replaced, etc. However, if the code does return, it is likely that the catalytic converter is at fault. There are many possible reasons why fuel pressure can be either too high or too low at the fuel rail, but resist the temptation to automatically assume that the fuel pump is at fault. The symptoms of code P0170 on effected vehicles can vary greatly, but note that not all symptoms will be present in all cases. The solution is here : Hyundai Grandeur P0170 Possible Solution : Disconnected, dirty or fouled spark plugs are common causes for engines that won't start.
I don't known where I started to do. Bank 2 refers to the bank of cylinders that does not contain cylinder 1. It is also a good idea to retest the system after each step in the repair process to ensure a reliable repair. Perform a thorough visual inspection of the entire fuel system, and check for damaged, kinked, pinched, or otherwise damaged fuel lines that could restrict the flow of fuel, since the volume of fuel that is delivered to the engine is as important as the pressure it is delivered at. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it.
Also be aware that that the severity of one or more symptoms may differ between applications. Step 3 Consult the manual on the input voltage, resistance, and reference voltage values for the post catalytic oxygen sensor. The information on which these adaptations are made is derived from the post catalytic 2 oxygen sensor. Clear all codes, and retest the fuel pressure after repairs had been made to verify that the fuel pressure falls within the specified range. The image below illustrates how the pulse width, which is the amount of time in milliseconds the injector stays open to inject fuel is adapted to compensate for lean -, or rich-running conditions. High oil consumption can deposit a film of oil on the element, causing inaccurate readings, and in many cases, a simple cleaning of the element will resolve this code.
However, the reading must immediately return to a lean er condition as the throttle opening is reduced. Note that this is a rare event, and the fault must be sought elsewhere before any controller is replaced. If you have any doubt as to repairs on your vehicle, please contact your technician. As an example, one flash, followed by a 2 second pause, followed by two flashes and another 2 second pause, followed by two flashes and a 2 second pause, followed by three flashes and another 2 second pause, indicates a failure code 1223. Obviously, it activates the Check Engine light. The solution is here : Hyundai Accent P0170 Possible Solution : The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. Now don't ask yourself; What should you do with P0170 code? You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot.