It should have two vacuum lines and one electrical connector coming out of it. Sensor Issues– There are many sensors that the vehicles computer relies on to accurately operate the EGR system. When one of them goes bad, they. It could be that the egr tube is. Here’s an article from Autozone on how to test it with a vacuum gauge. Check DPFE Sensor Voltage. Others rely on an electric signal. Test the EGR Valve. If you are good with a voltage meter, test the DPFE sensor voltage. At that point, it’s likely you’ll have to replace the EGR valve. P0401 is a very common OBDII trouble code that’ll pop up in the Saturn SL. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. 12 posts • Page 1 of 1. 5 V6 Figure 4. Test the EGR Valve. The ECM frequently sets a diagnostic trouble code when it notices an issue with the DPFE sensor (DTC). Hole story: I have a 95 I6 4. P1405 RAM EGR Solenoid High. COMPONENT TESTING DPFE Sensor. Here’s an article from Autozone on how to test it with a vacuum gauge. But I can't see the DPFE, nor find any description or photo of where the DPFE sensor is located. 4 2V. Sensor Issues– There are many sensors that the vehicles computer relies on to accurately operate the EGR system. Check DPFE Sensor Voltage. 5 Ohms. 0 (original owner) - LOTS of mods Toy #2 - 88 Tbird Turbo Coupe - LOTS of modsPage 2 of 3: MAF Sensor Test 2. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector. Here’s an article from Autozone on how to test it with a vacuum gauge. Y. Level. Symptoms of a Bad DPFE Sensor. P0402 is an OBDII trouble code that’ll pop up in the Toyota Land Cruiser. The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. 3. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. The EGR system is monitored during steady state driving conditions while the EGR is commanded on. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 30 ft. . Sensor Issue– The Differential Pressure Feedback- EGR sensor can go faulty and cause the EGR valve to stop operating properly and throw the code. Check the EGR Tube- It’s a good idea to check the tube going to the EGR because it’s often the cause of P0402, easy to do, fast, and replacing it is very affordable. I am mechanically inclined and don't have a problem getting dirty. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. Ford EGR Flow Testing (P0401, P0402. The sensor monitors and measures. P0402 will then be thrown. Check DPFE Sensor Voltage- If you are good with a. The DPFE sensor and its hoses should hold the vacuum; the hoses should not be cracked or restricted. You should use a wire piercing probe and probe the wire a few inches away from the connector. Allow the multimeter to register the voltage. A vacuum gauge will help determine if the EGR valve has gone bad. But on the test drive the check engine light illuminated. The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. now remove two EGR valve bolts. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. g. These gases help keep the engine’s combustion temperature under 2500 degrees Fahrenheit. Now carefully take a small safety pin and stick it in behind the top wire parallel to the wire. Other Fords owned: 00 Taurus, 96 T-Bird, 95 Escort GT, 93 Mustang 5. 7. If the codes return, move on to the next step. Other Names: dpfe1. P0402: EGR → Excessive Flow Diagnosis. Re: Suspected Vacuum Leak 5. e. Here’s an article from Autozone on how to test it with a vacuum gauge. You do NOT want to pierce the wire, only make contact inside the connector. In this section, we’ll explore effective methods for testing the DPFE sensor, interpret the test results, and make informed decisions based on the findings. Diagnosing what is causing the P0402 code in the Sonic is typically not very tricky. Turn key to the OFF Position. After cleaning/reassembling and starting car, the Service Engine Soon light was off. 20-0. Never probe the front of the connector. Hope this helps, let me know. I'm not sure you have one, though it's possible. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. Check DPFE Sensor Voltage. Disconnect the pressure hoses at the DPFE sensor. A vacuum gauge will help determine if the EGR valve has gone bad. That will reset the PCM and clear the memory. These gases help keep the engine’s combustion temperature under 2500 degrees Fahrenheit. P0401 Fix The good news with P0401 in the Ford Edge is that it rarely ever costs much money to fix, and it is usually pretty easy to get the problem since it is right on top of the engine. lbs. 🔧 Looking for an OBD2 Scan Tool? ---- Get product recommendations by answering a few questions. Check DPFE Sensor Voltage. . A vacuum gauge will help determine if the EGR valve has gone bad. Test the EGR Valve. Causes of the P0401 Code. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. P0402 will then be thrown. Find this part online here:Amazon Affiliate LinkBuy My Book - How to Warp Jumph. Some of these sensors include the EVP, DPFE, and MAP sensors. This is what I thought was the. Test the EGR Valve. Sensor Issue – The Differential Pressure Feedback- EGR sensor can go faulty and cause the EGR valve to stop operating properly and throw the code. 55. Test the EGR Valve. Test the EGR Valve. Step #4 Check EGR solenoid. If the EGR pressure sensor sends any false reading to the computer it can cause the EGR system to malfunction. When it comes to your Ford F-250 Super Duty, you want parts and products from only trusted brands. The car's wiring can be tested in the normal fashion (see our article on Automotive Circuit Testing here), and all vacuum lines can be checked easily for cracks, leaks and correct routing. The replacement of the Differential Pressure Feedback Electronic sensor is very simple and can be done with the help of some common tools. 2. Test the Airflow Mass Sensor: In an ideal scenario, the sensor signal sent to the Powertrain Control Module will increase once you start the engine. Yes, another Ford EGR problem! This one shows some of the same procedures as my other Ford EGR videos (listed below) but there is a little more attention giv. When one of them goes bad, they. If the sensor seems correct, check and measure the sensor’s wirings and the engine control unit. Unique to Ford The DPFE sensor is unique to Ford because it actually measures the flow of the exhaust gases. If you are good with a voltage meter, test the DPFE sensor voltage. I understand the EGR and DPFE are supposed to be connected, so if I follow the insulated tube/hose from the. Some of these sensors include the EVP, DPFE, and MAP sensors. Important Suggestions And Tips. If you are good with a voltage meter, test the DPFE sensor voltage. The DPFE would be on it's own bracket but close to the EGR to the left of the intake, right of the EGR itself and above where the heater hoses connect to the water pump. The EGR system in your car is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. CASE 1: Your multimeter registered 10-12 Volts. The voltage should increase, and you should hear the engine start to run rough or even stall, as EGR is. Apply 8-9 in. 1. Here’s an article from Autozone on how to test it with a vacuum gauge. No Scan Tool Needed. Level. Stop, DO NOT replace expensive parts or O2 sensor! Ford Explorer codes p0174 , p0401 , rough idle and check engine light on. 354 and 358 are the rear cylinders both banks. This video will show you method of quickly testing one of the most commonly faulty parts on a Ford EGR system. Sensor Issue – The Differential Pressure Feedback- EGR sensor can go faulty and cause the EGR valve to stop operating properly and throw the code. Test the EGR Valve. A faulty DPFE sensor can cause decreased fuel efficiency in your vehicle. Guees. It is common for most auto repair shops to charge between $75 and $150 per hour. One by one, you can eliminate the DPFE sensor and EGR tubing. Test the EGR Valve. If you are good with a voltage meter, test the DPFE sensor voltage. ------making any change on gas peddel pressure fixes it at these low speeds. If you are good with a voltage meter, test the DPFE sensor voltage. 4. If there is an EGR valve position sensor on top of the EGR valve, there won't be a DPFE sensor. (20-30 Nm) on 3. A vacuum gauge will help determine if the EGR valve has gone bad. Connect the red multimeter test lead to the battery positive (+) terminal. If you are good with a voltage meter, test the DPFE sensor voltage. Avoid physically touching them, like with a cotton swab, since this could break the hot wires. Check DPFE Sensor Voltage. P0402: EGR → Excessive Flow Diagnosis. I have a 1995 f150 with the 4. 0. Here’s an article from Autozone on how to test it with a vacuum gauge. Complete the Coolant Temperature Sensor Test. If however, the vacuum does not hold, or decays however slowly, the EGR diaphragm is leaking and the valve must be replaced. COMPONENT TESTING DPFE Sensor Disconnect the pressure hoses at the DPFE sensor. 9L (J) 116" Marked With OE # F4ZZ. Received 1 Like on 1 Post. Test the EGR Valve. Check DPFE Sensor Voltage. 171/174 too much oxygen in the exhaust, sounds like you may have a vacuum leak after the Mass Air Flow sensor (MAF). If you are good with a voltage meter, test the DPFE sensor voltage. Ford EGR Flow Testing (P0401,. EGR sensor disconnected. Here’s an article from Autozone on how to test it with a vacuum gauge. 55 volts. It should also hold vacuum for at least a minute. Test the EGR Valve. Check DPFE Sensor Voltage. 0 hour of labor. Can anyone tell me where the hoses to the exhaust manifold actually connect. Typically, this voltage should be about 1. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. P0402 will then be thrown. Rough Idle. The amount of gas cycled back into the engine is typically not more than 10%. Meaning: What is the P0401 Code on Ford. . The cost to diagnose the P1400 Ford code is 1. Here’s a good article on how to do that from It Still Runs: How to Test DPFE Sensor. Snake the vacuum hose under the hood and secure it under the wiper. If you are good with a voltage meter, test the DPFE sensor voltage. 45 volts. # F2SE-9J460AA,F2SZ-A 10900 1995-1994 1. 3. Here’s an article from Autozone on how to test it with a vacuum gauge. P0401 is a very common OBDII trouble code that’ll pop up in the Cadillac DeVille. The Check Engine Light Is On. Here’s an article from Autozone on how to test it with a vacuum gauge. TIP 2: Do not use carburetor spray cleaner or brake cleaner. You replace the DPFE sensor by un-bolting it from the firewall with a 10mm socket (unless you have the less common '01 DPFE Sensor), pulling the old one off the rubber hoses, disconnecting the wire harness from it, putting the new one back onto the rubber hoses (the same way it came off), re-attaching the wire harness and bolting it back to the firewall. carefully take out EGR valve with EGR tube. Labor: 1. E. 2. Apply varying amounts of vacuum to the downstream port of the DPFE and monitor The next step is to verify that the DPFE sensor is working correctly. The DPFE Sensor measures EGR flow across an orifice located inside the special EGR Tube. Check DPFE Sensor Voltage. • Duty-cycle solenoid valve — The EGR position sensor and the intake air temperature sensors (IAT 1 and IAT 2) are used to monitor the flow rate.