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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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P0340 code

DTC P0340: Camshaft Position (CMP) Sensor Circuit
P0340 ?€¢
The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 seconds without a CMP sensor pulse.


The ECM detects that the engine has started, but did not received a CMP sensor pulse during the first engine revolution.


The ECM detects that the engine is running, but does not receive a CMP sensor pulse for 800 of 1,000 engine cycles.

The 4X camshaft position (CMP) sensor circuits consist of an engine control module (ECM) supplied 5-volt reference circuit, low reference circuit, and an output signal circuit. The CMP sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes of the teeth and slots of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the CMP sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with 4 varying width output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the CMP sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses CMP sensor output information to determine the camshaft relative position to the crankshaft, to control camshaft phasing, and for limp-home operation.
You need a cam sensor or have wiring problem !

Apr 30, 2015 | Cars & Trucks

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05 ram no speedo but senser good wireing good has p0501 code and no abs light on

Tell me how do you know that all speed sensors are good?
The ABS brake system uses 3 wheel speed sensors. A sensor is mounted to each front hub/bearings. The third sensor is mounted on top of the rear axle differential housing.
OPERATION The Wheel Speed Sensor consists of a magnet surrounded by windings from a single strand of wire. The sensor sends a small AC signal to the CAB. This signal is generated by magnetic induction. The magnetic induction is created when a toothed sensor ring (exciter ring or tone wheel) passes the stationary magnetic WSS.


May 08, 2014 | 2004 Dodge Ram 1500

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My brakes seem to be making a stuttering noise when coming to a slow stop....brakes and rooters are new.....seems to be the abs system but not sure how to fix it.

Hi this is an ABS problem. Whats happening is one of the wheel speed sensors is giving a wrong
signal to the ABS system.
On each wheel hub there will be a toothed wheel which triggers the sensor on and off as it monitors each wheel speed.
So the problem could be a sensor malfunctioning (unplug each sensor in turn and use an ohm
meter across the two terminals the faulty one is the one with the different reading ).
the problem ould also be a toothed wheel rusted or debri between the teeth so a wrong signal
gets sent to the ABS system.
I have seen on another product the toothed wheels rusted so bad they cracked and were then loose on hub so free to rotate differently to the wheel.
A diagnostic check should be able to tell you which wheel the fault is on
I hope i have been able to help you
John ( South Wales UK )

Jun 02, 2011 | 2003 GMC Envoy

1 Answer

2002 bravada w / smart track. when coming to a complete stop the break pedal will pulsate & makes a rapid clicking. i removed the fuse for abs & it no longer does it.

HI The pulsing of the brake pedal is the ABS system cutting in because it thinks there is a situation
where one or more wheels is slowing down different to the other wheels ( But in reality is not ).
The problem is one of the wheel speed sensors giving a wrong signal to the system.
Bu can also be the toothed wheel which activates the sensors ( One on each wheel ) may be rusty or debri between the teeth so sensor does not give a clean signal .
This week i have replaced 2 toothed wheels for this problem on another product. The rigs were so
rusty they split and were then loose on the wheel hub
Hope i have been of some help to you ( a diagnosis would tell you exactly which wheel was at fault )
John ( South Wales uk )

May 12, 2011 | 2002 Oldsmobile Bravada

2 Answers

Brake and abs lights are on intermittentedly

you need to see what the abs code is for as it will turn on the red brake need to know what this is to repair.check the brake fluid level in the master cylinder just in case thats all it is.

Apr 25, 2011 | Chevrolet S 10 Cars & Trucks

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My ABS brake light and the DSC stabelizer light is on, what does that mean?

Since both lights are lit, the first suspects are components that are shared by both systems.
The wheel speed sensors are used by both systems and are located under the car where they are prone to abuse by flying rocks and so forth. I would start by raising the car and examining the speed sensors inboard of the brake disks, making sure that the toothed wheels are not bent, the sensors are intact and all the same distance from the toothed wheels, and the wires to the sensors are not damaged.

Mar 16, 2011 | BMW X5 Series Cars & Trucks

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I have the ABS & the traction light on at the same time, are they on the same curcuit, what could be the problem ?

its a wheel sensor thats for sure ,on the front if its as traction light as well i suspect,either the toothed gear on one of the drive shafts has come loose or a sensor ,but not sure if this has a painted metal path on the back of the wheel bearing instead of the toothed wheel ,if a toothed gear they often come loose and quick tack weld fixes this ,checking the sensor is east ,disconnect it and take it off then connect a meter to the two wires and set it to the lowest milliamp setting and move a spanner over the end and you should see a flicker on the meter if its workinig ok

Dec 12, 2010 | 1998 Ford Windstar

1 Answer

Will crank but not start

Crank sensor may be bad. Crankshaft Position Sensor OPERATION Fig. 1: The CKP sensor trigger wheel rides on the front of the crankshaft. The missing tooth creates a fluctuation of voltage in the sensor 91194p63.jpg
The Crankshaft Position (CKP) sensor is a variable reluctance sensor that uses a trigger wheel to induce voltage. The CKP sensor is a fixed magnetic sensor mounted to the engine block and monitors the trigger or "pulse" wheel that is attached to the crank pulley/damper. As the pulse wheel rotates by the CKP sensor, teeth on the pulse wheel induce voltage inside the sensor through magnetism. The pulse wheel has a missing tooth that changes the reading of the sensor. This is used for the Cylinder Identification (CID) function to properly monitor and adjust engine timing by locating the number 1 cylinder. The voltage created by the CKP sensor is alternating current (A/C). This voltage reading is sent to the PCM, it is used to determine engine RPM, engine timing, and is used to fire the ignition coils. prev.gif next.gif

Aug 03, 2010 | 1997 Lincoln Continental

2 Answers

Check abs system lite on how do you find the code list

ABS Fault Code List 1991 Corvette (C4)
Code Definition
21 Right Front Wheel Speed Sensor Fault
22 Right Front Toothed Wheel Frequency Error
25 Left Front Wheel Speed Sensor Fault
26 Left Front Toothed Wheel Frequency Error
31 Right Rear Wheel Speed Sensor Fault
32 Right Rear Toothed Wheel Frequency Error
35 Left Rear Wheel Speed Sensor Fault
36 Left Rear Toothed Wheel Frequency Error
41 Right Front Solenoid Valve Fault
45 Left Front Solenoid Valve Fault
55 Rear Wheels Solenoid Valve Fault
61 Pump Motor or Motor Relay Fault
63 Solenoid Valve Relay Fault
71 Electronic Brake Control Module Fault
72 Serial Data Line Fault
75 Lateral Accelerometer Fault (Short ot Open)
76 Lateral Accelerometer Fault (Signal out of Range)

Mar 12, 2010 | 1991 Chevrolet Corvette

1 Answer


i'm not sure exactly what the question is but there is not tires with sensors sensors are always mounted on the rims by the valves but if you install a diferent wheel then the light monitoring the air pressure will come on

May 20, 2008 | 2008 Volvo S40

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