Need help my 05 mustang gt was running ruff my obd II reader code came up with 2 of 2 codes. First one was camshaft position sensor a- bank 2 circuit malfunction then again but pending. I have change both sensors bu tcar will run for a few miles but in slw traffic then starts to chug again. also my check charging system light on my dash keep coming on but no codes show up on my reader. I have changed battery from stock one to higher amp 700 cold cranks but light still comes on and off when I drive.
The problem may be due to poor grounds between the negative battery post and the alternator. The floating ground will cause the field voltage to be too low at times which will then not charge the battery and at times will also cause the voltage output to high (18 to 20 volts) which will damage the battery check the voltage between the negative battery post and the alternator. if this is not close to zero you will be in the same position shortly. by adding a ground strap between the battery post and the alternator bracket Poor grounds can lead to early failure of other things such as wheel bearings which are damaged by small arcing from the voltage differences between the drive train and the body while you are at it check all the grounds for poor connections remove clean and refit
SOURCE: Check engine light comes on. p0171 and p0351 codes found
From Lusty Kid:
I know the economy is bad, but change all of the plugs. Check your PCV Valve hose, 150 rottens them out allowing air to be sucked in, thus all kinds of codes.
Depending on mileage. Dismount the EGR valve and clean passages. If you are really good dismount the throtle position sensor body and clean out passages with Choke Cleaner., dismount where the EGR valves connects to the engine, clean out passages. Also check the hose thats behind this mounting to ensure is not clogged. If clogged clean it out. If not replace it. Is about 1.5 ft. long, connects to the PCV Valve Hose.
When is the last time you change your harness. Can't remember??? Replace it. Good Luck
SOURCE: 1995 Windstar OBD II showing codes PO340, PO171, and PO174.
Symptoms of a faulty Camshaft Position Sensor can include hard starting (or no starting), rough running/misfiring and/or loss of power.
Code 340 COULD be caused solely by a faulty Camshaft Position Sensor. However, this code refers to the entire circuit. So, replacing the sensor may not fix the issue. The problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM.
Codes 171 and 174 typically appear together. They are caused by the 02 sensors reading too much air (lean) in the exhaust. In most cases, simply cleaning the MAF sensor does the trick. I typically take it off and spray it with electronics or brake cleaner. Just make sure it dries before reinstalling. If this doesn't eliminate the codes, inspect all vacuum and PCV hoses, check for a dirty fuel filter and ensure the furl pressure is within limits.
For clarification, the first trip to the shop your car showed codes 402, 732, 733, 171 and 174. After changing the DPFE/EGR, did ALL those codes go away and now only codes 340, 171 and 174 exist? Or do you have the second set of codes in addition to the first codes?
SOURCE: 1995 Windstar OBD II showing codes PO340, PO171, and PO174
Hello;
With those codes, the first place I would check is the fuel pressure. Also check the fuel filter and replace it if you haven't already. Then clear codes and recheck. Even if your fuel pressure is with in range it still may not push enough fuel to operate your vehicle.
SOURCE: I got a camshaft position sensor malfunction code P0340.
it sounds like you have bigger problems if your car does not crank(turn over) then your timing belt could have broken and the one piston could be hitting a valve causing it to be locked up.normally when any sensor is bad car engine still cranks it just doesn't start.
Generic OBD II Diagnostic Trouble Codes
DTC CODES P0300 to P0399
P0300....Random/Multiple Cylinder Misfire Detected
P0301....Cylinder 1 Misfire Detected
P0302....Cylinder 2 Misfire Detected
P0303....Cylinder 3 Misfire Detected
P0304....Cylinder 4 Misfire Detected
P0305....Cylinder 5 Misfire Detected
P0306....Cylinder 6 Misfire Detected
P0307....Cylinder 7 Misfire Detected
P0308....Cylinder 8 Misfire Detected
P0309....Cylinder 9 Misfire Detected
P0310....Cylinder 10....Misfire Detected
P0311....Cylinder 11 Misfire Detected
P0312....Cylinder 12 Misfire Detected
P0313....Misfire Detected with Low Fuel
P0314....Single Cylinder Misfire (Cylinder not Specified)
P0320....Ignition/Distributor Engine Speed Input Circuit
P0321....Ignition/Distributor Engine Speed Input Circuit Range/Performance
P0322....Ignition/Distributor Engine Speed Input Circuit No Signal
P0323....Ignition/Distributor Engine Speed Input Circuit Intermittent
P0324....Knock Control System Error
P0325....Knock Sensor 1 Circuit (Bank 1 or Single Sensor)
P0326....Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327....Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328....Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329....Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)
P0330....Knock Sensor 2 Circuit (Bank 2)
P0331....Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332....Knock Sensor 2 Circuit Low Input (Bank 2)
P0333....Knock Sensor 2 Circuit High Input (Bank 2)
P0334....Knock Sensor 2 Circuit Input Intermittent (Bank 2)
P0335....Crankshaft Position Sensor A Circuit
P0336....Crankshaft Position Sensor A Circuit Range/Performance
P0337....Crankshaft Position Sensor A Circuit Low Input
P0338....Crankshaft Position Sensor A Circuit High Input
P0339....Crankshaft Position Sensor A Circuit Intermittent
P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)
P0341 Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 1 or Single Sensor)
P0342....Camshaft Position Sensor 'A' Circuit Low Input (Bank 1 or Single Sensor)
P0343....Camshaft Position Sensor 'A' Circuit High Input (Bank 1 or Single Sensor)
P0344....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or Single Sensor)
P0345....Camshaft Position Sensor 'A' Circuit (Bank 2)
P0346....Camshaft Position Sensor 'A' Circuit Range/Performance (Bank 2)
P0347....Camshaft Position Sensor 'A' Circuit Low Input (Bank 2)
P0348....Camshaft Position Sensor 'A' Circuit High Input (Bank 2)
P0349....Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2)
P0350....Ignition Coil Primary/Secondary Circuit
P0010....'A' Camshaft Position Actuator Circuit (Bank 1)
P0011....'A' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0012....'A' Camshaft Position - Timing Over-Retarded (Bank 1)
P0013....'B' Camshaft Position - Actuator Circuit (Bank 1)
P0014....'B' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0015....'B' Camshaft Position -Timing Over-Retarded (Bank 1)
P0020....'A' Camshaft Position Actuator Circuit (Bank 2)
P0021....'A' Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
P0022....'A' Camshaft Position - Timing Over-Retarded (Bank 2)
P0023....'B' Camshaft Position - Actuator Circuit (Bank 2)
P0024....'B' Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
P0025....'B' Camshaft Position - Timing Over-Retarded (Bank 2)
I think your sensors are pattern parts and the readings /resistances are not the same as the original parts ,try some bosch units is my first suggestion ,
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Hi mike_carmona, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Have you checked the camshaft timing?
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