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Cleaning EBPS Exhaust Back Pressure Sensor on 7.3l Ford Powerstroke
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What is P0470 Code On 6.0 & 7.3 Powerstroke & How To Fix?
P0470 is one of the diagnostic trouble codes of the Ford 6.0 & 7.3L Powerstroke. Not only these two models, other nozzle turbochargers powered vehicles can also …
Source: www.motoraudit.com
Date Published: 8/21/2022
View: 7663
Code P0470 – Ford Truck Enthusiasts Forums
P0470 is Exhaust Back Pressure Sensor Circuit Malfunction just as Duane99 sa. it is located on the right se of the engine, on the top, bese the HPOP and …
Source: www.ford-trucks.com
Date Published: 12/18/2022
View: 8425
p0470 Code on 95 F350 | Ford Power Stroke Nation
Key off. Disconnect EBP sensor connector. Inspect for loose, damaged or pushed out pins. Repair as necessary. Measure resistance from Pin A [ …
Source: www.powerstrokenation.com
Date Published: 12/7/2021
View: 2474
CODE P0470 Exhaust back pressure sensor circuit …
P0478 – The PCM has determined that the voltage signal from the exhaust pressure control valve is too high for the current engine operating …
Source: www.thedieselstop.com
Date Published: 7/1/2022
View: 5662
P0470 Exhaust Pressure Sensor Malfunction – OBD-Codes.com
This code is strictly concerned about the incoming signal from the exhaust pressure sensor not matching intake manifold pressure or ambient air pressure at key …
Source: www.obd-codes.com
Date Published: 8/2/2021
View: 947
P0470 Code – Exhaust Pressure Sensor Malfunction
What are the common causes of P0470 ? In most cases, this code is caused by a clogged back pressure tube and/or exhaust back pressure sensor.
Source: troublecodehub.com
Date Published: 4/3/2021
View: 8473
P0470 FORD Code – Exhaust Pressure Sensor Malfunction
|When is the P0470 FORD code detected? … An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module (ECM) …
Source: www.engine-codes.com
Date Published: 12/13/2022
View: 5742
p0478 & P0470 codes? | Ford Powerstroke Diesel Forum
P0478-exhaust pressure control valve high input P0470- exhaust back … I just got the P0478 code on my 2001 Excursion 7.3 this morning.
Source: www.powerstroke.org
Date Published: 12/20/2021
View: 8025
po470 CODE! – The Diesel Garage
Well im getting a po470 code exh. back pressure sensor…well first … 2000 F-250 PowerStroke Diesel, CrewCab, ShortBed, Harvest Gold …
Source: www.thedieselgarage.com
Date Published: 10/5/2022
View: 6068
What is P0470 Code On 6.0 & 7.3 Powerstroke & How To Fix?
What is the P0470 code on 6.0 and 7.3 Powerstroke and how to fix it?
Whether you’re running a 6.0L or a 7.3L, you’re bound to get some DTCs (Diagnostic Trouble Codes) from the PCM. The P0470 is one of those diagnostic trouble codes.
If you’re getting code P0470 and don’t know how it came about, this article is for you. With this article, you will know everything from the symptoms to the methods of fixing this error code.
What does the P0470 code mean on 6.0 & 7.3L Powerstroke?
P0470 is one of the Ford 6.0 & 7.3L Powerstroke diagnostic trouble codes. Not just these two models, other turbocharged vehicles can also have this trouble code. By definition, the P0470 code refers to a malfunction in the exhaust back pressure sensor circuit.
The EBP (Exhaust Back Pressure) sensor measures the pressure between the engine’s exhaust gas and the turbine wheel of the VGT/conventional turbocharger. This EBP helps the PCM (Powertrain Control Module) control the EPR (Exhaust Pressure Regulator) for increased engine performance.
When the PCM is unable to communicate with the EBP sensor due to electrical issues, it generates trouble code P0470. Alongside this code, the PCM can generate a second P0471 trouble code depending on the duration of the first code.
Symptoms of getting the P0470 code on a Ford 6.0 & 7.3
You will notice certain symptoms when you get the P0470 code on a 6.0 or 7.3L Powerstroke. Expect to have the code if your truck has the following issues:
Check Engine Light (CEL) is on Low or no boost problem Poor fuel economy Dramatically reduced power Cranks but no starting problem
Overall, you will not be very happy with your truck in terms of driveability and fuel economy.
The causative factors of trouble code P0470
The P0470 trouble code can occur for a number of reasons. Here are some of the most common causes of trouble code P0470:
Blockage in the exhaust back pressure sensor Blockage in the EBP sensor pipe (coming from the engine manifold) Exhaust air intake, recirculation system or charge air leaks Defective powertrain control module (rare case)
How serious is code P0470 on a power stroke (6.0L and 7.3L)?
It’s a serious code considering it directly affects engine performance. Leaving the code longer could result in serious engine damage in the future.
Because of this, it is best if you take your time to check and fix this error code. The following section of this article will help you fix it.
How do I resolve trouble code P0470 on 6.0 & 7.3L Powerstroke?
P0470 is a very easy code to resolve, no matter what model Ford you own. However, you will need the following equipment to perform the diagnostic process:
5/8″ wrench and 1″ socket,
9/16 inch wrench & wire stripper/crimper
OBD-II scanner
Once you’re done with your gear, let’s begin the diagnostic process:
Check the wiring and connections
First, check the exhaust back pressure sensor wiring. Don’t forget to also check the connectors while checking the wiring.
Check for damaged, burned, or charred wiring and connectors. If you find them during your visual inspection, consider replacing the damaged wires or connectors.
Finally, reset the code using any OBD-II scanner and take it for a test drive. If the code does not appear, there is a problem with the wiring. If it returns, follow the next diagnostic part.
Check exhaust back pressure sensor
If all the wiring and connectors appear to be fine, focus on the prime suspect – the exhaust back pressure sensor, or EBP sensor. In order to do anything with the EBP sensor, you must first detach it.
Before that, you need to know the EBP sensor locations of Ford 6.0L & 7.3L Engine. Here you are:
6.0L EBP Sensor Location: The sensor is located on the driver’s side of the engine. You’ll find it on top of a pipe coming out of the exhaust.
The sensor is located on the driver’s side of the engine. You’ll find it on top of a pipe coming out of the exhaust. 7.3L EBP Sensor Location: The sensor is located near the engine in front of the HPOP (high pressure oil pump).
Note: Accessing the 6.0L EBP sensor is fairly easy compared to the 7.3L Powerstroke. You will also need to remove a plastic engine cover to access the Ford 7.3L EBP sensor.
Since you already know the locations and access to the EBP sensor, it’s time for a step-by-step guide on how to disable it:
Step 1: Access the EBP sensor.
Step 2: Carefully disconnect the electrical connector from the EBP sensor.
Step 3: Both 6.0L and 7.3L have 1 inch diameter EBP sensors. Take your 1 inch jack and cover the EBP sensor with it.
Step 4: Use the 9/16″ open-end wrench to support the bushing and avoid damaging the sensor.
Step 5: Release the EBP sensor.
You finally have your EBP sensor in your hand. Inspect it thoroughly and check for dirt and carbon blockages. You can clean the EBP sensor with an air compressor.
After cleaning the EBP sensor:
Reinstall it and use a scanner to clear the code. Check if the code still returns or not. If it happens again, consider replacing the EBP sensor with a new one.
Check the exhaust back pressure sensor pipe
Considering that you’ve already taken the EBP sensor off and repaired/replaced it and are still getting the P0470 trouble code, it’s time to inspect the EBP sensor tube.
Follow the next step-by-step guide to disable the EBP sensor tube:
Step 1: The EBPS tube holds the EBP sensor up; remove it first.
Step 2: Use the 5/8″ wrench to loosen the EBP sensor tube. In the meantime you will need to hold the top nut in place with a 9/16 inch open end wrench.
Step 3: The other end of the hose connects to the front of the passenger side of the engine. Finally remove it with your hand and the 5/8 inch wrench.
After removing the EBPS hose:
Examine the tubing just as you did with the EBP sensor. Use an air blower to clean the pipe. If you find severe dirt or damage on the hose, replace it with a new one.
Replace your powertrain control module
Hopefully, by implementing the three processes above, you have fixed your P0740 trouble code. If you’re still getting the code, it’s time to replace the powertrain control module.
Facts: Why didn’t I suggest replacing the PCM first? Because you can’t tell you have a faulty PCM until you’ve already replaced the EBP sensor.
How much does it cost to resolve trouble code P0470?
The cost of resolving the P0470 trouble code depends on the replacement parts that you receive. You will better understand the estimated cost by following the next replacement pricing table:
EBP sensor tubing is $15-$20
The EBP sensor costs $30 to $70
Cables cost more than $50
6.0L and 7.3L PCM are $500–$800
Also, don’t forget to add $75 to $150 in labor costs per hour if you have this job done at a dealership.
Common mistakes when trying to solve the P0470 code
You will make mistakes if you are a bit inattentive with any of the diagnostic procedures mentioned in this article. Consider avoiding the following common mistakes:
Do not replace your PCM before you have tested and replaced all possible parts causing the DTC. Be careful when removing the EBP sensor and don’t forget to use the 9/16″ open-end wrench.
You will fare far better than the majority by avoiding these common and easy-to-avoid mistakes.
This error code prevents the engine from using its full potential. In order to have a healthy driving experience, you should fix the P0470 trouble code as soon as possible.
Conclusion
I hope this article has been informative enough to know DTC P0470 thoroughly. Now you can easily fix this code in an hour or so with basic equipment.
If you want to play it safe without getting involved, consider getting expert help. Although they will charge you a high labor fee, you can have peace of mind.
Related posts:
Ford Truck Enthusiasts Forums
Thanks Duane and Strokin for your quick replies.
Before this code was set the truck would run fine, then it would, I don’t know how to describe it, like a cough or hump, similar to a carburetor misfire. If it happened twice within a mile or two, the SES would light up. Shutting down and rebooting would turn off the Lite.
I finally found a FORD truck mechanic who is now working as a service manager for an international truck dealer. We had quite a conversation. First he thought it was a camera sensor and told me he had a snapper that would read it and bring it over. I asked him about the blue CPS and he said they were for the 6 cylinders and that they were having a hard time with them failing and if that was the problem he would give me a black IH sensor to try .
Upon arrival, the first test showed KOEO the code. He deleted it and then tested KOER without code. He ran some of the tests which turned off the sensors and made them jump and rattle, but as soon as they were turned off the code returned. Since we were outside and it was pouring rain, he couldn’t show me where it was, and since he was doing the test for free, I didn’t press him for more answers. He told me to remove and clean the tube, clean the underside of the sensor and then see if the problem comes back. He also told me to track it for a bit when I get home, in other words keep the odometer above 2500 and see if I could blow out a little carbon. The truck is now piped up, which confused me a bit.
Well, this dealer is about 1 1/2 hours from my house. On the way home the rain had stopped, I threw open the passenger window so I could hear it and started playing a bit, shifting down to 4th and cranking it up. After doing this several times, I noticed that the truck looked a little different in the power section. It came faster and stronger each time. This time when I turned it on and then switched to overdrive, there was a strange noise. I can not describe it. It was like a muffled bark in a can. The damn thing went off like a rocket, actually on the wet pavement on a corner, it was more like powersliding at 75 mph. It scared the shit out of me, it went so fast. It was more like a shot of Nitrous had been injected. Also, I could really hear the turbo through the exhaust. It seemed twice as loud.
The truck does not jerk, there is no SES light. I am completely confused. I don’t know if the code is still there.
Is there a possibility that the wastegate is stuck partially open and would cause this type of code? I had noticed an apparent loss of power, but I also changed the tire size (bigger) and made up for that loss. All I know is that it seems to be doing a lot better than it did.
Also Garrett, thanks for your reply. I’ve looked at the site but I don’t have a pyrometer so I don’t want to overdrive the sensor yet.
Code P0470 Exhaust Pressure Sensor Malfunction
P0470 Exhaust pressure sensor malfunction
Technical Description of OBD-II Trouble Code
Randy Worner
ASE Certified Master Technician Articles by ASE Certified Master Technician
Exhaust pressure sensor malfunction
What does that mean?
This generic powertrain/engine diagnostic trouble code applies to all engines that use variable nozzle turbochargers (petrol or diesel) beginning circa 2005 on Ford trucks equipped with 6.0 liter diesel engines, all Ford EcoBoost engines , and eventually leads to the Cummins 6.7L in 2007, the 3.0L in the Mercedes range in 2007 and here recently the Cummins 3.0L 6 cylinder in the Nissan pickups from 2015. That doesn’t mean that though You would not necessarily get this code in a VW or any other brand.
This code is strictly concerned with the incoming exhaust pressure sensor signal not matching the intake manifold pressure or ambient barometric pressure when it is turned on. This can be a fault in the electrical circuit or mechanical.
Code P0471 can also be present at the same time as P0470. The only difference between these two codes is how long the problem lasts and what type of electrical/mechanical problem the sensor/circuit/motor controller has. Troubleshooting steps may vary by manufacturer, gas or diesel, exhaust pressure sensor type, and wire colors.
A typical exhaust gas pressure sensor:
Related Exhaust Pressure Sensor Trouble Codes:
P0471 Exhaust Gas Pressure Sensor “A” Circuit Range/Performance
P0472 Exhaust Gas Pressure Sensor “A” Circuit Low
P0473 Exhaust Gas Pressure Sensor “A” Circuit High
P0474 Exhaust Pressure Sensor “A” Circuit Intermittent
symptoms
Symptoms of a P0470 engine code may include:
Check engine light comes on
lack of power
Manual regeneration not possible – Burn the soot from the particulate filter. Looks like a catalytic converter but has temperature sensors and pressure sensor probes set inside.
If regeneration cannot be performed, cranking without starting may eventually occur.
Possible causes
Typical causes for setting this code are:
Blockage in the pipe from the exhaust manifold to the pressure sensor
Exhaust gas recirculation system / air intake / charge air leaks
exhaust pressure sensor
A Powertrain Control Module (PCM) may have failed (highly unlikely)
diagnostic and repair procedures
A good place to start is always to find a Technical Service Bulletin (TSB) for your particular vehicle. The vehicle manufacturer may have a PCM flash/reprogramming to cover this issue and it’s worth checking before you realize you’ve gone down a long/wrong path.
Next, locate the exhaust pressure sensor on your particular vehicle. Once you find it, disconnect the hose that connects the sensor to the exhaust manifold. Try to blow through. If this is not possible, try threading a small piece of wire through it to remove the trapped carbon that is causing the error code you are encountering. If the hose is free and clear, visually inspect the connections and wiring. Look for chafing, rubbing, bare wires, burn marks, or melted plastic. Pull the plugs apart and carefully inspect the terminals (the metal parts) inside the plugs. See if they look corroded, burnt, or possibly green compared to the normal metal color you’re probably used to. If cleaning of the connectors is necessary, you can obtain some electrical contact cleaner from any parts store. If this is not possible, find some 91% rubbing alcohol and a light plastic bristle brush to clean them. Then let them air dry, get some silicone dielectric compound (the same stuff they use for lightbulb sockets and spark plug wires) and put something on where the terminals will make contact. Next, make sure the pipe connecting the turbocharger to the intake manifold isn’t leaking. Visually inspect all pipe connections around the turbocharger and intake manifold. Tighten all hose/band clamps.
If you have a scan tool, clear the diagnostic trouble codes from memory and see if that code returns. If it doesn’t, then most likely the connections were your problem.
If the code returns, we need to test the sensor and associated circuitry. There are usually 3 wires on the exhaust pressure sensor.
Disconnect the wiring harness to the exhaust pressure sensor. Using a digital volt ohm meter (DVOM), test the 5V power circuit going to the sensor to make sure it is on (red wire to 5V power circuit, black wire to good ground). If there is 12 volts at the sensor when it should be 5 volts, repair the wiring from the PCM to the sensor for a short to 12 volts or possibly a bad PCM.
If that is OK, use a DVOM to verify that there is 5V on the exhaust gas pressure sensor signal circuit (red wire to sensor signal circuit, black wire to good ground). If there is not 5 volts across the sensor or if you see 12 volts across the sensor Repair the wiring from the PCM to the sensor or again a possible bad PCM.
If that’s OK, check to see if you have a good ground at the exhaust pressure sensor. Connect a test light to the 12V battery positive terminal (red clip) and touch the other end of the test light to the ground circuit that goes to the exhaust gas pressure sensor circuit ground. If the test lamp does not come on, this indicates the problem circuit. If it lights up, wiggle the wire harness going to each sensor to see if the test light flickers, indicating a broken connection.
If all tests have passed so far and you continue to get a P0470 code, it most likely indicates a failed exhaust gas pressure sensor, although a failed PCM could not be ruled out until the sensor was replaced.
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My check engine light has been on for about 3 seconds and during that time there is no gas. Then everything goes back to normal. Had diagnostics on back pressure exhaust sensor PO603 and Po470 which I know I have a 6″ exhaust. The guy at the store says I need a new ECM, but this…
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