Volvo truck vehicles may generate many unwarranted error codes. Error codes often occur in heavy duty vehicles due to high torque and high load. The error codes most frequently encountered by users are listed in here.
The most problematic engine and fuel problems are driven by technology that is designed to reduce emissions from heavy-duty truck engines. Engine reliability has the greatest impact on overall product satisfaction, so it's vital that truck and engine manufacturers suck as VOLVO work quickly to reduce the number of problems related to volvo engine problems.
Most problems can be determined by process of elimination. Start by checking fuses—if the fuses check out, then check what the wire is controlling e. Next, check the circuit to make sure the wires are not damaged and have good continuity. There are miles of wires and plenty of potential problems areas. If this area checks out, move on to the beginning of the circuit e. About Contact Privacy. Reason For Volvo Truck OBD Problems : The most problematic engine and fuel problems are driven by technology that is designed to reduce emissions from heavy-duty truck engines.
Grounding problems can be caused by a myriad of issues, including: improperly installed aftermarket equipment an unsecured, overly secured, or stretched harness vibration of the diesel engine tightly installed zip ties from the factory corrosion resistance ECU communications.
VOLVO is a trademark that we trust.In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.
The problem is caused by the variable cylinder management system switching on and off during light throttle conditions, at cruising speeds, or when driving on flat roads. The constant switching causes excessive oil consumption and the trouble codes appear when oil pressure drops to the point where it can no longer operate the VCM system.
The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. 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.
If your P04D9 Volvo check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle.
VOLVO Trucks Fault Codes List DTC
Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system and engine control unit are in charge of monitoring a bunch of different, and if they get a reading that's a little out of whack, up pops the check engine light.
All auto trouble codes with car brands. P04D9 Volvo Possible Solution: The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. P U B C Example: P04D9 Volvo Trouble Repair : If your P04D9 Volvo check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle.
Example: Broken signal or negative wire, oxidation or damage to the contacts in the connectors. The signal wire is shorted to ground or the sensor is faulty. The sensor is located in the battery box. A device for starting is connected, a generator or a battery is faulty.
Faulty generator or battery. Break signal or negative wire. Oxidation or damage to contacts in connectors. Faulty sensor or outside air temperature below 50 degrees. The sensor is located under the lower step on the passenger side. The signal wire is shorted to ground, the sensor is faulty, or the outside air temperature is above 90 degrees.
Faulty sensor. Short to signal ground or defective sensor. The oil temperature in the gearbox is very high. Malfunction in the data channel or damaged contacts in the connectors. Broken data channel. A closure in the wiring between the blocks. Check for other fault codes. Check the health of other units. The reaction is not predictable.
Worn pads on one of the wheels, faulty wiring. Air ducts of the cabin heater are faulty, external influence for example, sun rays on the instrument panel. Malfunctioning dashboard equipment, malfunctioning fuel level sensor or environmental sensor. Fault in the wiring between the dashboard and sensors. Faulty dashboard. Also make sure that the coolant temperature is below 78 degrees and the engine speed does not exceed rpm. A short to a higher voltage wire between the dashboard unit and the button unit.Volvo P0401 EGR insufficient flow
A short to ground between the dashboard and button block. Breakage or partial damage to the data channel wiring between the dashboard unit and the button unit. Disruption of communication over the data channel with the control unit of the adaptive system to maintain the specified speed ACC MID Disruption of communication over the data channel with the rear axle unit with electronically controlled MID Open or short circuit of the communication channel between the dashboard unit and other units.
We'll assume you're ok with this, but you can opt-out if you wish.Coolant Temperature Code 6. Boost Temperature Code 6. Piston Cooling Pressure Code 6. Piston Cooling Pressure Sensor Code 6. Injector, Cylinder 1 Code 7. Injector, Cylinder 2 Code 7. Injector, Cylinder 3 Code 7. Injector, Cylinder 4 Code 7. Injector, Cylinder 5 Code 7. Injector, Cylinder 6 Code 7. Crankcase Ventilation Pressure Code 7.
Crankcase Ventilation Pressure Sensor Code 7. Air Temperature Sensor, Inlet Code 7. Injection Pressure Code 8. Injection Pressure, Regulator Code 8. Pressure in Distribution Manifold Code 8. Pressure Valve Code 8. ECU Temperature Code 8. Internal EGR Code 8. Preheating Sensor Code 8. Volvo Engine Fault Code Register.
Fault Code Register of Volvo Engine. All Rights Reserved Sitemap. Home Products News Contact Us. Check that the injector cables are not damaged? Check that the injector connections are not damaged? Check fuel supply pressure?However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.
So you should chech it on our car models.
The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.
If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. 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.
Parts or components should not be replaced with reference to only a P DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Code Search Please fill the "Code Box" to find engine fault code. Ways to read engine trouble codes. Ways to clear check engine light on car panel. Check Engine Light Dictionary Ways to clear check engine light on car panel. Main engine trouble code archive on Web. Copyright EngineTroubleCode.
Check engine light comes on Engine stalling or misfiring Engine performance issues Car not starting. If one of these reasons for P code is occuring now you should check P repair processes. Now don't ask yourself; What should you do with P code?
The solution is here :.T here seems to be a common problem which affects the engine's exhaust gas recycling EGR function. It happened to my own V60 D4 registered July5, miles from new this morning on the way to work. Engine behaviour was unchanged, and there was no information message in the dashboard display.
Volvo XC60 P0490 Engine Trouble Code
What surprised me was that they didn't ask me to bring the car in to have the diagnostic fault codes read, or ask me about any other symptoms — they just said yes, we know what the fault is, and they're going to throw the new EGR and cooler at it. The service manager went on to tell me that they did three such repairs yesterday on D4-engined cars, and have parts on order for another seven cars too. From this, it seems the problem is fairly common and widespread in cars with the D4 engine.
It also seems to me although this is purely my opinion that the replacement parts are a revision or update of the factory-fitted parts. The dealer did state the car is safe to drive in the meantime, and that if I should experience any further issues such as the engine going into limp modeI should simply call Volvo Assist. I had it with my XC60 with the new D4 engine, only at around km mileage. I was also told by the service in Luxembourg that the EGR was partially clogged hampering the movement of the valve.
Apparently, it is quite a common problem on the new D4 engines. They have been receiving plenty of similar calls lately.
They did two things to fix the problem. First, they have made an update of the software on the car. Secondly, they replaced the EGR with a newly designed or revised model, ordered directly from Sweden that is, not from the stock.
They told that they have been in contact with the Volvo HQ all the way through. The service did only what Volvo instructed them to do. This makes me think that Volvo is aware of the problem and have made fixes in the software and the EGR model. It is very frustrating to have such a head-ache at such an early mileage. I really hope the new EGR will solve the problem.
I do not want to have the same thing over and over every km. Thanks for that -- yes, Volvo HQ is distributing updated EGR valves and EGR coolers to dealers, so these can be fitted if a customer's car gets the 'check engine' light. I don't think it is a full recall as yet, but Volvo is gearing up to fix the problem.
An update on this issue -- Volvo seems to be replacing the EGR valve and cooler on every VEA D4 diesel, either when the owner reports the problem or at a scheduled service as a matter of routine.
The problem seems to be that the original factory-fitted EGR cooler unit had sealing problems, allowing small amounts of engine coolant to mix with the exhaust gases in the EGR valve body. I have this problem which has been ongoing since the 17th Feb, hopefully the new EGR cooler with be with my dealer on the 8th April.
My concern is with the EGR valve not working correctly, blocking the cooler for nearly 2 months and miles what damage has been done to the mechanics of the car, i.
P04D9 DTC For Volvo Volvo
I asked Volvo and they said that if the was likelihood of damage being done I would have been informed and given a courtesy car. The general feeling on the Volvo forums is that it won't damage the motor. Also, when the DPF is regenerating in any modern car, the EGR valve also shuts, to raise exhaust gas temps to the required regeneration temperature.
Apparently since mine was done Volvo's latest 'fix' is merely to load a revised engine managment map. I currenlty have an open complaint case with Volvo as in my opinion this new map has completely backed off the small turbo so I no longer have a car with instant torque, I now have a car which only comes awake above 2k revs.
Car has been verified as having no faults and the perfomance change came with the new map. Have also driven an 'off the production line' March D4 and it was exactly the same as mine now is. Not a happy bunny - nor am I happy that after over 5 weeks of complaint I still have no answers whatsoever as to if they consider this the 'permanent solution', since this is no longer the car I bought!
A car I was formerly head over heels in love with and made me grin every time I drove it. Could this really be caused by a replacement EGR valve?EDC unit does not meet the specifications of the car. The engine will not start. Replace the control unit. With this code with no other fault codes and the lack of faults in air pressure sensor circuit brake pedal lamp "Check Engine" should go out after 4 seconds after you press and hold the brake pedal is further.
Faulty wiring in air pressure sensor circuit brake pedal or defective sensor. It does not work the system maintain the set speed. The engine is not running off or cause manifestations of this error codes are 5 or 6.
Faulty speed sensor pump or damaged wiring between the fuel pump and EDC. EDC unit uses the signal of the engine speed from the generator. Loose or damaged drive belts generator, the generator is faulty or defective wiring of the generator contact "W". Not performed or is unsuccessful calibration of tachographs, tachograph calibration code is different from the EDC block of code, the wrong signal from the tachograph.
EDC unit reduces the engine speed for vehicles with a speed limiter. Incorrect signal from the tachograph or damaged wiring. Cruise control uses the signal of the engine rotation speed instead of the road speed signal. Faulty temperature sensor discharge air or damaged wiring, clogged intercooler intercooler defective bypass valve. Engine output reduced. Faulty sensor discharge air temperature or damaged wiring, signal wire shorted to ground.
Faulty coolant temperature sensor or wiring is damaged. Faulty coolant temperature sensor wiring damaged faulty water pump, faulty thermostat, clogged honeycomb cooling radiator. Faulty air boost pressure sensor or wiring is damaged. Fuel flow is temporarily reduced. Faulty sensor wiring or the pedal.
P04D9 DTC For Volvo Volvo
Faulty EDC unit. The big difference between the actual and expected position of the injection pump control rack. The engine stops. Malfunction of the injection pump rack.
Can stop the engine. Invalid or no signal from the control pump mechanism. Faulty sensor of the accelerator pedal or damaged wiring between the motor and pedal control unit. Incomplete accelerator pedal possible sharp increase in engine speed. Idling switch 12 of the accelerator pedal. Faulty wiring, faulty instrument cluster is faulty Tachograph. Cruise control does not work until the fault code is active.
Defective engine control unit. Cruise control does not work.