Question about Cars & Trucks
I put a head gasket on and the camshaft sensor A bank 1 code keep showing up the car will crank but will shut off after about 5 second what might be the probelm
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Posted on Jan 02, 2017
SOURCE: my car started out when
Hi, the code p0420 and p0340 is a summary of all the problems your are facing with your car and you need to troubleshoot and fix the problem.
P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) system sees a drop in converter efficiency. The OBD II system monitors catalyst efficiency by comparing the switching activity of the upstream and downstream oxygen sensors in the exhaust. The upstream O2 sensor in the exhaust manifold reflects the condition of the exhaust gases as they exit the engine. The downstream O2 sensor in or behind the catalytic converter reflects the condition of the exhaust after it passes through he converter.
The catalytic converter is like an after-burner. It oxidizes (burns) any residual fuel vapors (unburned hydrocarbons or HC) in the exhaust. It also burns any carbon monoxide (CO) in the exhaust. The exhaust must meet federal emission standards, and if a problem exists that causes emissions to exceed the federal limits by 150%, the OBD II system is supposed to catch the fault and set a code.
Under normal use, converters are engineered to last upwards of 150,000 miles. But any number of things can make it fail prematurely. The most common cause is contamination of the catalyst because the engine is burning oil or leaking coolant internally (leaky head gasket or a crack in a combustion chamber or cylinder). Converters can also be damaged if they overheat due to ignition misfiring that allows unburned fuel to pass through into the exhaust (check for a fouled spark plug or bad plug wire). The same thing can happen if the engine has a bad exhaust valve that leaks compression into the exhaust (check compression).
That means replacing the converter even if it is marginal or still functional.
P0340 indicates a short or open in the camshaft position sensor circuit, a damaged camshaft position sensor, an issue with the camshaft, a damaged timing chain, or an issue with the Electronic Control Module (ECM). Troubleshooting the cause is a multiple step process.
Check the resistance in the camshaft position sensor circuit using an ohmmeter. Disconnect the camshaft position sensor (a two-pronged male connection going into a female connection, located beneath the manifold adjacent to the camshaft) and insert the ohmmeter terminals into the female connection. Resistance cold should be between 835 to 1400 ohms. If the engine is warm, it should be between 1,060 and 1,645 ohms. If the resistance is outside of those levels, replace the sensor.
Check for an open or a short in the male connection. Trace the line to where it connects to the vehicle's computer (near the battery). Disconnect the line from the battery and plug one end of the ohmmeter into the sensor side and the other end of the ohmmeter into the computer side. Check for continuity (the resistance should register less than one ohm). If the measurement is higher than one ohm, replace the cable. Also inspect for damage to the harness on both ends. Any damage or corrosion requires replacement.
Visually inspect the timing belt. Remove the access plug from the top portion of the timing belt cover (located on the side of the engine towards the top near the firewall) and visually inspect the timing belt. Verify that you can see the belt and it appears tight. If you do not see the belt, it has broken or slipped.
Replace the access plug. If all aspects of the diagnosis check out, the timing is likely off on the engine. Correcting the timing will repair the issue.
Posted on Feb 09, 2011
timing belt is off by a tooth or two. you probably didn\'t have to replace the coolant sensor; that code sets whenever the sensor is disconnected and the ignition is turned on; and it needs to be reset by disconnecting the battery or with a code reader. anyway, the crank/ cam sensors are out of sync. if you\'ve got the twin cam engine, they are a royal pain to get the belt to lay properly on the two cams.
Posted on Apr 15, 2013
Testimonial: "got it in time but it is giving a p0016 code, and at around 30 mph the rev limiter is coming on"
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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
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