Question about Nissan Altima

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I have a check engine soon light and the diagnostic reads for the speed sensor and crankshaft sensor to be replaced. Is it possible that the speed sensor tripped when my crankshaft position sensor went bad?

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  • Nissan Master
  • 11,800 Answers

Yes, it's possible, but not very likely since they are not interconnected, they are not even on the same branch of the wire loom.

Posted on Jul 04, 2010

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  • mimi_n_pink Jul 04, 2010

    is it impairative that i replace both at the same time?

  • mimi_n_pink Jul 04, 2010

    how long does it take to replace a crankshaft position sensor normally?

  • Azrael SRL Jul 04, 2010

    No, it's not imperative, but it's highly recommended. You could delay the install of the VSS but without it you will not know your speed and a fine for speeding will be more expensive than the replacement of the sensor.


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P1336 trouble code ho to solve problem


P1336 Ford P1336 Ford - Crankshaft Position Or Camshaft Position Sensor Input Signal Error Share
0 ' Add Comment Possible causes
- Faulty Crankshaft Position Sensor
- Faulty Camshaft Position Sensor
- Crankshaft Position Sensor harness is open or shorted
- Crankshaft Position Sensor circuit poor electrical connection
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
What does this mean? When is the code detected?
The Engine Control Module (ECM) has detected a synchronization or signal error from the cam or crank sensors
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
- Engine difficult to start
P1336 Ford Description
The input signal to the powertrain control module (PCM) from the crankshaft position (CKP) sensor or the camshaft position (CMP) sensor is erratic.

Read more: http://www.engine-codes.com/p1336_ford.html#ixzz3qT9Hiztc

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2001. Why is it hard to start at times?


If the service engine soon light is on ,have you had it checked for DTC'S - diagnostic trouble codes ? When is it hard to start , first time you start it in the morning , or any time , randomly ? You should have a diagnostic scanner hooked up to check engine sensor data parameters .

Oct 07, 2015 | Saturn Cars & Trucks

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What is code p0727


Possible causes
- Faulty Crankshaft Position (CKP) Sensor
- Crankshaft Position (CKP) Sensor harness is open or shorted
- Crankshaft Position (CKP) Sensor circuit poor electrical connection
- Communication error between the Engine Control Module (ECM) and Transmission Control Module (TCM)

The P0727 Codes is triggered when the TCM receives no signal from the ECM.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0727 Description
The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).


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Codes 32 75 12 22 on a check engine light


first code it's P0320 Possible causes
- Faulty Ignition/Distributor engine speed sensor
- Faulty Crankshaft Position sensor
- Ignition/Distributor engine speed sensor harness is open or shorted
- Ignition/Distributor engine speed sensor circuit poor electrical connection
- Low battery charge
- Faulty Engine Control Module (ECM)


Read more: http://engine-codes.com/p0320_ford.html#ixzz3DcwddSlp
2- P0750 Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 1 valve
- Shift solenoid 1 valve harness or connectors
- Shift solenoid 1 valve circuit is open or shorted


Read more: http://engine-codes.com/p0750_ford.html#ixzz3DcwoXS73
3- P0120 Possible causes
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection


Read more: http://engine-codes.com/p0120.html#ixzz3Dcx3VCPs
4- P0220 Possible causes
- Throttle Position Sensor (TPS) harness is open or shorted
- Throttle Position Sensor (TPS) circuit poor electrical connection
- Faulty Throttle Position Sensor (TPS)
- Fault Electric Throttle Control Actuator (or Throttle Body Motor)
- Accelerator Pedal Position Sensor (APP)


Read more: http://engine-codes.com/p0220.html#ixzz3DcxGUMl4

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1 Answer

P1336 gm code


P1335 CHEVROLET P1335 CHEVROLET - Crankshaft Position Circuit Possible causes
- Faulty Crankshaft Position Sensor
- Crankshaft Position (CKP) Sensor harness is open or shorted
- Crankshaft Position (CKP) Sensor circuit poor electrical connection help.png Help with this
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
P1335 CHEVROLET Description
The Crankshaft Position (CKP) sensor sends pulses to the Powertrain Control Module (PCM) as the reluctor wheel teeth rotate past the CKP sensor. The PCM uses the CKP pulses to synchronize the ignition and fuel injector operation, and to time the interval between each CKP pulse. The PCM determines when an excessive change in crankshaft speed occurs by comparing each new time interval with the previous interval. A misfire causes an unexpected change in the crankshaft speed. A certain amount of acceleration/deceleration is expected between each firing stroke, but if the crankshaft speed changes more than an expected amount, the PCM interprets this as a misfire. The interval between CKP sensor pulses is extremely small. At high engine speeds, slight variations in the following components make misfire detection difficult:
- Crankshaft
- Reluctor wheel
- CKP sensor
The PCM learns variations during the Crankshaft Position System Variation Learning Procedure. The PCM compensates for these variations when performing detect misfire calculations. Only a scan tool can command the PCM to perform the Crankshaft Position System Variation Learning Procedure again.
Perform the learning procedure after the following actions:
- A PCM replacement
- Any operation or repair involving the crankshaft, the CKP sensor, or the CKP sensor to reluctor wheel gap relationship.
- An engine replacement.
- The ignition switch is in the ON position until the battery is drained.


Read more: http://nissanhelp.com/diy/obd_codes/p1335_chevrolet.html#ixzz37IoD1Imx

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Whats code po 343


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
P0343 Chevrolet Description
The Camshaft Position (CMP) Sensor sensor works in conjunction with a 1X reluctor wheel on the camshaft. The Powertrain Control Module (PCM) provides a 12 volt power supply to the CMP sensor as well as a ground and a signal circuit.
The CMP sensor determines whether a cylinder is on a firing stroke or on an exhaust stroke. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor. The sensors internal circuitry detects this and produces a signal which the PCM reads. The PCM uses this 1X signal in combination with the Crankshaft Position sensor 24X signal in order to determine crankshaft position and stroke. This diagnostic for the Camshaft Position sensor tests for a loss of Camshaft Position sensor signal.
Observe that as long as the Crankshaft Position sensor 24X signal is available, the engine will start. The PCM can determine top dead center for all cylinders by using the Crankshaft Position sensor 24X signal alone. The Camshaft Position sensor 1X signal is used by the PCM to determine if the cylinder at top dead center is on the firing stroke, or the exhaust stroke. The system attempts synchronization and looks for an increase in engine speed indicating the engine started. If the PCM does not detect an increase in engine speed, the PCM incorrectly synchronized to the exhaust stroke and will re-sync to the opposite cam position. A slightly longer cranking time may be a symptom of this condition.

Read more: http://engine-codes.com/p0343_chevrolet.html#ixzz31FPYjyRM

Mar 26, 2014 | 2002 Chevrolet Suburban

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I HAVE A 1999 Dodge Caravan, driving along 10mph engine stopped running, would not start after stopped. Replaced crankshaft, camshaft sensor, coil pack, fuel pump, checked fuses, relays, still no start,...


Did your Check Engine or Service Engine Soon light come on? If so, there is an error code (Diagnostic Test Code or DTC) stored in your Caravan's onboard computer. Have the code read and interpreted, and you can google the results to see which system triggered the code. If no light came on, you may want to check your fuel filter, spark plugs, distributor cap, rotor and breaker points/inductive pickup (depending on how the engine is equipped). Other possibilities include carburetor or throttle body injectors malfunctioning. Many possible causes, but the DTC route is easiest to check. Good luck.

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1 Answer

2000 galantwhat is codep0715


P0715 MITSUBISHI - Input/Turbine Speed Sensor Circuit Malfunctionpdf.gif? comments.gif ' Add Commentxicon.jpghttp://engine-codes.com/p0715_mitsubishi.htmlForum CodePossible causes - Transmission speed sensor circuit is open or shorted
- Transmission speed sensor circuit poor electrical connection
- Faulty transmission speed sensor
help.png Help with thisWhen is the code detected?Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor.Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Possible shifting problemsP0715 MITSUBISHI Description The input speed sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM).
Need more help?Do you need more help with the P0715 MITSUBISHI code? ask a question to our users or search the top hand picked automotive forums for more information

Read more: http://engine-codes.com/p0715_mitsubishi.html#ixzz2QYRb9Yyu
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2 Answers

2005 nissan almera,1.5letre.. fault code po725


P0725 NISSAN - Engine Speed Signal

The P0725 Codes is triggered when TCM does not receive the engine speed signal from ECM.

The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes:
- Open or shorted CKP sensor circuit condition
- Poor CKP sensor electrical connection
- Check communication error between the ECM and TCM
- Failed CKP Sensor

Possible solution:
Very common problem with Nissan vehicles, usually replacing the Crankshaft Position sensor takes care of the problem.

Keep us updated.

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1 Answer

Replaced crankshaft sensor, car still won't start


A camshaft sensor can cause a no start situation, so can a bad coil, or ignition control modual. You need further testing done.
A speed sensor does not cause a no start, that I'm aware of.

Jul 14, 2009 | 1990 Oldsmobile Regency

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