Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Cost of diagnosing the P code Labor: 1. The auto repair labor rates vary widely across the country, and even within the same city. The FRP sensor measures the pressure difference between the fuel rail and atmospheric pressure. The FRP sensor nominal output varies between 0.
The sensor can read vacuums and may lower the output voltage to slightly below 0. This condition is normal and is usually the case after several hours of cold soak before the vehicle dome light is turned on. The FP module is energized at the same time the dome light is commanded on. A disabled or malfunctioning dome light does not affect the FP module control. The PCM uses the FRP signal to command the correct injector timing and pulse width for correct fuel delivery at all speed and load conditions.
The FRP sensor, along with the fuel volume regulator part of the fuel injection pumpform a closed loop fuel pressure control system. An electrically faulted FRP sensor results in the deactivation of the fuel injection pump. Fuel pressure to injectors is then provided only by the FP module.
When the fuel injection pump is de-energized and the injectors are active, the fuel rail pressure is approximately 70 kPa 10 psi lower than Punjabi larkay ki gand mari punjabi larkey ne module pressure due to the pressure drop across the fuel injection pump. Thus, if the FP module pressure is kPa 65 hangouts trackerthen the fuel rail pressure would be approximately kPa 55 psi if the injectors are active.
P More Information Need more information on how to fix the P code? Get Access to Factory Service Manuals. Related Information.
Repair Importance Level: 3. Why is the Engine Light ON?Worried about potential repair costs? An extended warranty can provide peace of mind. See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs.How to fix reduced engine power mode on GMC and Chevy / Throttle body cleaning on 2010 GMC Terrain
To see how frequently GMC Terrain problems occur, check out our car reliability stats. See most expensive repairs Worried about potential repair costs? Chart based on 29 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
See repairs for all GMC Terrain model years. Dealer checked and said nothing is wrong but GMC created a file and will watch for others with this problem. Rear seat does not fold flat--appears stuck. Dealer lubed the lever and said I was not pulling the lever properly give me a break. I tried several times at dealer and it worked fine. Got home and tried again and it did not work. Replaced the water pump. So no repair or parts were required. Dealer replaced with new part under warranty.
Oct km First trip to the dealer they did the de-carbonization, then on the second trip and 1 week in the shop they found excess carbon buildup on the intake valves and have replaced 3 injectors, added fuel treatment and recommended the top tier gasoline to us. Jul km Paint starting lifting off of rear hatch. It was repainted under warranty. The fix was to replace the pneumatic strut on the right side; seal was bad allowing gas to escape. Turn car off. Then on. Just engine lite. Code is P Replaced fuel rail pressure sensor.
Jun km Rubbing noise front driverside. Just heard it when slowing down,braking.This page is meant to give a broad overview of the most common problems with the GMC Terrain.
The Terrain is built on the Theta platformwhich it shares with the Equinox. Analyzing this data is a great way to determine the most common issues that can happen with your vehicle. The GMC Terrain was available with two engines. They were the direct injected Ecotec 2. For the most part, they were fairly reliable motors. The number engine problem for this model year is aggressive oil consumption in the four-cylinder version. Here are the most common engine problems with the GMC Terrain.
Oil Consumption — The reason that the engine causes such a high percentage of problems with the Terrain is oil consumption. The 4 cylinder version leaks oil really bad. It is a known issue. These cars are out of warranty, for the most part. Most of the time, when taken to the dealer, an entire engine rebuild or replace is how they solve the problem.
The problem is that it can stall at speed, which can be dangerous. Chattering on Startup — One of the most common issues with this model year is a chattering sound when trying to fire up the engine. It sounds rough, and will normally only do it for about 10 to 15 seconds after startup. The Terrain was equipped with six speed automatic transmissions. They could be manufactured both stateside and in Korea.
The 6T45 is a relatively trouble-free transmission. It is considered to be a fill for life transmission. That means that as long as it is operated under normal conditions, it will not require any transmission fluid change. Many of the problems that occur with this transmission can be attributed to the fact that it is fully controlled by the engines computer. It uses shift solenoids to accomplish this. When one of them goes bad, it can adversely affect the performance of the transmission.
Most of the problems that occur with a 6T45 shift solenoid are caused by the coil wire going bad in some way.
P0191 - Fuel Rail Pressure Sensor Circuit Range/Performance
It can go bad in a couple of ways. The plunger can also get stuck. You can test the solenoids with an OHM meter. You should be looking for ohms of resistance. If no resistance is found, than you know that the solenoid is bad, and that it is broken.Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. When the fuel pressure is high, the signal voltage is high. When the fuel pressure is low, the signal voltage is low. The fuel pressure regulator has a solenoid supply voltage circuit and a solenoid control circuit. The ECM controls the fuel pressure regulator, which regulates high pressure fuel that goes to the fuel injector rails and the injectors.
Get Access to Factory Service Manuals. Need more help? Get the P Gmc code diagnosed by a professional: Find a repair shop in your area. Related Information. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P Gmc code? Have you replaced any parts?
Any information is appreciated. Repair Importance Level: 3. Why is the Engine Light ON? Home - About AutoCodes. Posted and Edit by AutoCodes.I bought my new terrain in May after just having it a short time the navigation screen would go very dim and then bright. I took it to dealership more than once, they did not know why or how to fix it after trying several times.
I contacted GMC corporate about the problem. It is still not fixed. I stopped taking it to dealership because if they can't fix it why take it in. Now I have another problem. My ck engine light coming on. Took it to dealership, it is a random misfire, they don't know why or how to fix it. It's in there for 2nd time in one wk I now have the gen mgr involved- I refuse to get stuck with a lemon. I have a loaner vehicle I just trade the terrain in for new chevy. I had nothing but problems with the terrain almost since day one.
It would constantly jerk when it shifted gears, was very loud when running- manifold problems and gas fumes were coming into vehicle so bad that windows had to be opened. I do not recommend anyone buy this vehicle. It's looks nice but that's about it. I have a GMC Terrain, 4 cylinder. I am also experiencing a lot of what others have written on here.
2012 GMC Terrain repairs by problem area
I am going through oil like crazy and my favorite part is the "dummy" light is not even coming on to tell me. I am checking my oil weekly and having oil changes every 2, miles with Penzoil Full Synthetic. The only code that has ever appeared is the cam shaft sensor, which I replaced, but I still continue to have oil consumption issues.
It is ridiculous that GM will not investigate this issue after numerous complaints. I also experience the shifting issues jerking when taking off from a stop. This car is total garbage and I will continue to just put oil into it and I refuse to replace an engine on a car that is 3 years old that I have documentation that I have properly maintained.
Dangerous when engine powers down on highway for no apparent reason Three times in miles on a GMC Terrain. Just fixed on Wdnesday picked up on friday andf powered down again on with family members in car ioncluding a 3 year old grandson. It's not consistent so the dealer can't diagnose it and it never does it when I try to show it to someone.
I've been told that this isn't a problem, but it still makes me nervous. Other than that, I love the Terrain! Have always liked the Terrain look, ordered New inreceived on time, dealership very honest on pricing and reviewing options on vehicle before delivering. Courtesy Chevrolet -Kingsport, TN. AWD- 4 cyl. Like sound of engine and the shifting. Has a manual option, comes in handy on downgrades and when coming to a stop. AWD handles good on curvy roads.It indicates that the fuel rail pressure sensor is receiving a signal that is outside of its normal range.
This is a generic code, which indicates that it has the same meaning for the GMC Terrain as it would any other vehicle. P is typically caused by a bad fuel pressure sensor, fuel pressure regulator, or an issue with the fuel rail pressure sensor wiring harness.
When P is present, there typically are noticeable symptoms. Drivability is usually affected. If it runs too rich, you may get black smoke and P P can be caused when the fuel pressure regulator is bad. This can lead to the engine dying when coming to a stop as well. If it goes bad or if the fuel pressure really is out of the normal range P can and will appear. Wiring issues can cause P to be thrown. Take a look at the wiring harness around the fuel pressure sensor.
Does it look broken or damaged? Is the connection to the sensor solid? If it looks bad, it may need to be replaced. The fuel pressure regulator is responsible for making sure that the amount of fuel pressure that reaches the fuel rail is at a constant level which will be less than pushed by the fuel pump.
GMC Terrain P0191: Fuel Rail Pressure Sensor → Circuit “A” → Range/Performance
If it goes bad, it can restrict the flow of fuel to the point that P can be thrown. A bad fuel pump would act exactly like a bad fuel pressure regulator. This is typically noticed under heavy engine load. A good scanner can help you look at the conditions that were present when the code was set. You can also use it to check the fuel pressure reading as you drive. P can be a difficult code to track down, but should not be ignored. Doing so very well could leave your GMC Terrain stranded. If there is anything that you would like to add, please leave a comment below.
Good luck. Unreliable Idle P can be caused when the fuel pressure regulator is bad. Wiring Wiring issues can cause P to be thrown. Fuel Pressure Regulator The fuel pressure regulator is responsible for making sure that the amount of fuel pressure that reaches the fuel rail is at a constant level which will be less than pushed by the fuel pump.
Conclusion P can be a difficult code to track down, but should not be ignored.Devin was very professional, friendly, welcoming, and patient.
Unfortunately I did not purchase the vehicle but they followed up with me and was very nice. Tyler was a JOY to work with! Answered all questions we had. I've been very pleased with my Altima thus far. Great car at an even greater price. I'd definitely recommend this dealer to anyone looking. Came in and it was very relaxed there wasn't a rush and i got a good reliable vehicle. I was impressed with the professionalism, friendliness, and honesty of the dealership!
The salesman was willing to negotiate on the price of the vehicle I wanted to buy. Furthermore, he waived all fees associated with the sale. I ended up buying from here after a lengthy search for a vehicle.
2012 GMC Terrain Problems
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