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P0370 6. 5 diesel

Play Now. Engine-Codes - Generic - P P Possible Causes What does this mean? How is the P code repair? Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

p0370 6. 5 diesel

What is the cost to diagnose the P code Labor: 1. The auto repair labor rates vary widely across the country, and even within the same city.

How much do you know about cars? Take the AutoCodes. When is the code detected?

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A number of high resolution pulses missing per every 8 cam reference pulses. P Meaning The optical sensor provides a high resolution signal to the Powertrain Control Module PCM by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs by the PCM for fuel control and timing.

This test monitors the number of high resolution pulses which have been missed not detected. It's based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse. More Information Need more information on how to fix the P code? Get Access to Factory Service Manuals.

Need more help? Get the P code diagnosed by a professional: Find a repair shop in your area. Why is the Engine Light ON? Repair Importance Level: 3.Forums New posts Search forums. What's new New posts New resources New profile posts Latest activity. Resources Latest reviews Search resources. Members Registered members Current visitors New profile posts Search profile posts.

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P0370 OBD-II Trouble Code: Timing Reference High Resolution Signal A Malfunction

Click here to contact us! Forums Engine Discussions GM 6. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. P P codes again Thread starter HighSierra86 Start date Oct 25, HighSierra86 Active Member. Ok guys.

I think my luck has finnaly run out on this one. Our chevy express van with the 6. Ive had a common problem with these codes p,p but once cleared they wont return for months.This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic.

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The P code means that the optical sensor has missed a number of high resolution pulses in correlation to cam reference pulses. These pulses provide the PCM with information needed to ensure fuel is delivered correctly, and that the right air mixture is provided for combustion. It is possible for a number of different conditions to cause the P code to set, including the following:. Generally, you will not notice many drivability issues if the P code sets.

The most likely will be the Check Engine Light turning on. However, it is also possible that you will notice reduced fuel mileage and rough engine operation.

The technician will read the codes stored in the computer and then clear them. It will be necessary to test drive the vehicle to see if the code resets. If the code does reset, the mechanic will then move on to further diagnostic steps.

The wiring harness for the timing reference optical sensor will need to be checked for damage or breakage. If nothing is found wrong with the harness, the connections will be checked. The sensor itself may also need to be cleaned and tested.

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This may require removing the sensor from the car in order for an accurate test to be conducted. Many technicians make the mistake of assuming that the underlying problem is the sensor itself and replacing it without completing a full diagnostic. While the sensor is often the culprit, it is also possible for the problem to be completely unrelated to the sensor wiring harness, connections, etc.

Therefore, a full diagnostic should be performed to rule out any other possibilities. The P code might not create significant drivability problems initially.

It may not even cause any symptoms beyond the Check Engine Light illuminating. The most common repair for the P code is replacing a failed reference optical sensor. However, other fixes may be needed depending on the actual underlying cause of the fault, including:.

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at With YourMechanic you can skip the auto shop altogether.

They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance.If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Posts 7 codes p ,p I have these codes driving me nuts, can anybody helpstarted on a trip from Fl. I got to the S.

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Though rarely the cause, a bubble in the fuel could distort the optical signal, and is mentioned in the GM service manuals as a possibility. The standard rule approach to solving problems applies here when dealing with a problem fuel injection system.

The 6. Posts 7 fuel pressure can it be ck. I use it. It works. If fuel flows out the drain line when the t-valve is opened, there's pressure. The exact pressure is less important than whether there "is" or isn't pressure. The downside to opening the t-valve is that the engine will stall airlock the injection pump if the lift pump isn't generating pressure because air will be sucked into the drain line.

A safer way to do it is to insert a fuel pressure gauge into the open end of the drain line before opening the t-valve. Recovering from an airlocked fuel injection pump is sometimes easy and sometimes hard to solve. It should flow at least a pint a minute with the engine idling.

If it doesn't stall, and has no fuel flow with the Tee open, the line or valve may be blocked. As Jim said, it's much better to install a gage on the drain line and see what you actually have.

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At idle, it should maintain a steady PSI. While a few intrepid souls have changed an EOS on their own, it's a risky situation with little guarrantee of success. For most people, I recommend a pump change - done by a well qualified tech using certified parts.

Posts 7 Need Fuel Lines C extened cab 6.If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

p0370 6. 5 diesel

Results 1 to 3 of 3 Thread: codes P and P are back! I got the error codes back yesterday P and P since October of I had mentioned it on the forums then and tried the a few things which was suggested from the forum but it was a nogo. I brought the truck back to the dealer in October but they couldn't figure it out either. The service tech did not think it was the fuel pump because they had changed two under 40k miles.

After a few days of playing around with the truck, they found that by reseating the PCM behind the glove box cured the problem meaning no engine light. They think it might be the PCM but are not per cent sure. The truck rode fine until last week when it happened again. This time I only got P I disconnected the batteries overnight and reconnected them in the morning. I drove it for another week and no problems until yesterday.

On the highway coming back from my snowmobile trip it triggered again. I couldn't drive as hard because it would hesitate or misfire after 60 if I would accelerate hard. I then pulled over the highway and checked codes again and P and P were dislayed.

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I cleared the codes with the scanner and drove off. I drove about 30 miles and no engine light and drove it hard. Anyway could this be the fuel pump or something else?Play Now. What does this mean? P Possible Causes What does this mean?

How do I fix code P? Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. How much do you know about cars? Take the AutoCodes.

P0370 - Timing Reference High Resolution Signal 'A' Malfunction

Cost of diagnosing the P code Labor: 1. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type.

p0370 6. 5 diesel

When is the code detected? A number of high resolution pulses missing per every 8 cam reference pulses. P Description The optical sensor provides a high resolution signal to the Powertrain Control Module PCM by counting pulses on the sensor disk located in the injection pump.

The high resolution is one of the most important inputs by the PCM for fuel control and timing. This test monitors the number of high resolution pulses which have been missed not detected. It's based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse.

More Information Need more information on how to fix the P code? Get Access to Factory Service Manuals.Lil C. Join Date: Oct Location: Idalia CO. Posts: 7. Code P Any thoughts on this code? The Dodge books say, if its there, replace the injector pump. But seems almost too easy of a diagnostic. I got the code from the shop I took it to cause it started an intermitent miss at any operating condition.

Ive replaced the crank sensor, fuel filter, pressure gauge on the fuel, idle, never below 10 at WOT whether hi RPM or low. I have no mods, yetand new to the cummins all together. It didnt do it for a week and miles, then did it again one afternoon and hasnt done it since, but I dont have the codes yet, if any were set.

Im not new to mechanics, but new to the electronic diesels and the 5. Thanks a ton! Find all posts by Lil C. Sponsored links. Join Date: Jan Location: Arbutus,Maryland. Posts: 11, Re: Code P There are a few codes that say replace the VP. There may also be a cam sensor on the backside of the gear case right below where the VP mounts-could be that. You may also want to check the grounds on the engine.

Haven't come across that code in a long while.


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