The problem is not the relay switch the problem to me sounds like the fuel filter needs to be replaced so i wouldnt be messing with the relay switch because the relay switch would be harder to replace.
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Re: 2004 Audi A4 3L won't start
Relays rarely fail on Audis. Are you positive the vehicle has fuel? I have seen many fault dash gauge readings, indicating full constantly. Also the sender unit on the fuel pump can give faulty readings, causing the same problem. If your not 100% sure its got fuel it may be worth just putting in 5 litres in and give it a go. If your sure it has, its back to basics, air, fuel and spark.
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codes 130 and 150 indicate a malfunction in the upstream oxygen sensor circuit which is affecting both oxygen sensors. This fault does not directly pinpoint the o2 sensors as defective, more diagnosis must be performed to get to the root of the problem. You could have a condition where power is not reaching the sensors, causing them to appear dead. There may be a fuel or airflow related issue causing the sensors to report abnormal readings.
To answer your question, the o2 sensors in question are between the engine and the cat convertor in the exhaust. Whether or not changing them blindly will fix your problem is another question.
Diagnostic Trouble Code Storage Condition Remedy P0100 Mass Air Flow Sensor Voltage High C-8 P0100 Mass Air Flow Sensor Voltage Low C-8 P0110 Intake Air Temperature Voltage High C-10 P0110 Intake Air Temperature Voltage Low C-10 P0115 Coolant Temperature Voltage High C-9 P0115 Coolant Temperature Voltage Low C-9 P0120 Throttle Position Sensor (TPS) Voltage High C-7 P0120 Throttle Position Sensor (TPS) Voltage Low C-7 P0130 O2 Sensor 1 Circuit Voltage High C-30 P0130 O2 Sensor 1 Circuit Voltage Low C-30 P0130 O2 Sensor 1 Open Circuit C-30 P0150 O2 Sensor 2 Circuit Voltage High C-31 P0150 O2 Sensor 2 Circuit Voltage Low C-31 P0150 O2 Sensor 2 Open Circuit C-31 P0201 Injector Valve 1 Voltage High C-20 P0201 Injector Valve 1 Voltage Low C-20 P0201 Injector Valve 1 Open Circuit C-20 P0202 Injector Valve 2 Voltage High C-21 P0202 Injector Valve 2 Voltage Low C-21 P0202 Injector Valve 2 Open Circuit C-21 P0203 Injector Valve 3 Voltage High C-22 P0203 Injector Valve 3 Voltage Low C-22 P0203 Injector Valve 3 Open Circuit C-22 P0204 Injector Valve 4 Voltage High C-23 P0204 Injector Valve 4 Voltage Low C-23 P0204 Injector Valve 4 Open Circuit C-23 P0205 Injector Valve 5 Voltage High C-24 P0205 Injector Valve 5 Voltage Low C-24 P0205 Injector Valve 5 Open Circuit C-24 P0206 Injector Valve 6 Voltage High C-25 P0206 Injector Valve 6 Voltage Low C-25 P0206 Injector Valve 6 Open Circuit C-25 P0230 Fuel Pump Relay Voltage High C-6 P0230 Fuel Pump Relay Voltage Low C-6 P0230 Fuel Pump Relay Open Circuit C-6 P0325 Knock Signal Circuit 1 C-26 P0330 Knock Signal Circuit 2 C-26 P0335 No Engine RPM Signal C-32 P0335 Incorrect RPM Signal C-32 P0340 Hall Sensor Voltage High C-15 P0340 Hall Sensor Voltage Low C-15 P0403 EGR Valve Voltage High C-28 P0403 EGR Valve Voltage Low C-28 P0403 EGR Valve Open Circuit C-28 P0410 Secondary Air Pump Voltage High C-27 P0410 Secondary Air Pump Voltage Low C-27 P0443 Fuel Tank Ventilation Valve Voltage High C-29 P0443 Fuel Tank Ventilation Valve Voltage Low C-29 P0443 Fuel Tank Ventilation Open Circuit C-29 P0500 Vehicle Speed Signal C-42 P0505 Idle Air Control Voltage High C-33 P0505 Idle Air Control Voltage Low C-33 P0550 Power Steering Voltage High C-14 P0550 Power Steering Voltage Low C-14 P0560 Battery Voltage High C-4 P0560 Battery Voltage Low C-4 P0602 Control Module Programming Error C-2 P1110 Intake Manifold Valve 1 Voltage High C-34 P1110 Intake Manifold Valve 1 Voltage Low C-34 P1111 Intake Manifold Valve 2 Voltage High C-35 P1111 Intake Manifold Valve 2 Voltage Low C-35 P1230 Power Supply Relay Secondary Circuit C-3 P1405 EGR Valve Feedb. Voltage High C-28 P1405 EGR Valve Feedb. Voltage Low C-28 P1405 EGR Valve Feedb. Incorrect Signal C-28 P1501 Immobiliser No or Wrong Coding C-5 P1502 Immobiliser No Signal C-5 P1503 Immobiliser Wrong Signal C-5 P1530 A/C Relay Voltage High C-41 P1530 A/C Relay Voltage Low C-41 P1600 Reprogram or Replace Electronic Control Unit (ECU) C-2 P1602 Knock Control Module; Replace ECU C-2 P1690 Check Light Voltage High C-43 P1690 Check Light Voltage Low C-43 P1690 Check Light Open Circuit C-43 P1740 Torque Control Voltage Low C-40 P1740 Continuous Torque Control C-40
The article supersedes TSB 12-3-17 to update the Title, Issue Statement and Service Procedure.
Some 2009-2010 F-150 vehicles equipped with a 4.6L or 5.4L engine may exhibit an illuminated MIL with DTC P0130 (Oxygen Sensor Circuit Bank 1, Sensor 1) or P0150 (Oxygen Sensor Circuit Bank 2, Sensor 1).
Follow the Service Procedure steps to correct the condition.
Retrieve all DTC's in the powertrain control module (PCM). Are diagnostic trouble codes P0130 or P0150 present?
Yes - proceed to Step 2.
No - this procedure does not apply. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) diagnostics.
Reprogram the PCM to the latest calibration using IDS release 78.01 and higher. This new calibration is not included in the VCM 2012.3 DVD. Calibration files may also be obtained at www.motorcraft.com.NOTE:
PLEASE ADVISE THE CUSTOMER THAT THIS VEHICLE IS EQUIPPED WITH AN ADAPTIVE TRANSMISSION SHIFT STRATEGY WHICH ALLOWS THE VEHICLE'S COMPUTER TO LEARN THE TRANSMISSION'S UNIQUE PARAMETERS AND IMPROVE SHIFT QUALITY. WHEN THE ADAPTIVE STRATEGY IS RESET, THE COMPUTER WILL BEGIN A RE-LEARNING PROCESS. THIS RE-LEARNING PROCESS MAY RESULT IN FIRMER THAN NORMAL UPSHIFTS AND DOWNSHIFTS FOR SEVERAL DAYS.
if the injector fuse is blown then the car won`t start as its not getting fuel into the motor to fire.if the fuse keeps blowing then you could have an injector/s that is drawing too much or the injector driver in the ecm may not be any good and needs replacing or a used ecm.it could be a short some where in the wiring for the injector system that is going to ground.
Your problem my friend is the fuel pump. These go out and your dead in the water. If all electrical systems seem fine and no warning light then I would highly suspect the fuel pump. Can you have someone get in and turn the key on and then turn it over while your looking into the throttle body, check and see if your getting gas, if none then it.s the pump. You can also try a LITTLE bit of starting fluid in the breather and it should try to start or may even run a few seconds, again this points to the pump or a completely clogged fuel filter. The pump is located in the gas tank just so you know.