Changed the camshaft and crank sensor now getting a code p0340 no camshaft reference signal at PCM for my dodge durango 2000

check all wiring and connections --or ECM connections
the codes refer to sensor A bank 1 did you replace the correct unit

P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction ,did you check the wiring ?
P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction The test fails when the PCM can no longer detect the signal from the CMP sensor.

• CMP circuit open
• CMP circuit short to GND
• CMP circuit short to PWR
• SIG RTN open (VR sensor)
• CMP GND open (Hall effect sensor)
• CMP misinstalled (Hall effect sensor)
• Damaged CMP sensor shielding
• Damaged CMP sensor
• Damaged PCM

Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have intermittent impact on the CMP signal. DR1 DTC P0340: CHECK IF ENGINE WILL START

Note: Refer to the Pinpoint Test Schematic to determine the type of CMP sensor.

• Start engine.

Will the engine start? Yes No GO to DR2 . DTC P0340 is not the cause of the No Start. GO to Section 3 to diagnose the No Start symptom. Is the PCM firing the injectors ?

• Starting Concerns:
  • No Start, Normal Crank

Note: Extended cranking because of a no start can load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts. For applications with Secondary Air Injection (AIR) Systems, perform the following after the no start has been repaired: Disconnect the electric secondary air injection (AIR) solid state relay, run the engine until the surplus fuel is used up, and reconnect the relay (disconnecting the relay may set a Continuous Memory PCM DTC that will need to be cleared).


SYSTEM/COMPONENT REFERENCE (Section 5 Pinpoint Test unless noted)

• Add-on Anti-Theft Devices

• Visual, check with customer.

• Fuel/Ignition

• For LS6/LS8:
• GO to KB85 .
• All others:
• GO to A1 .

• If engine is now a no start:
• If engine will start and run normally at part throttle, check Idle Air Control (IAC) System.

• Engine will now start and run normally at part throttle:
• GO to KE2

• Exhaust System (restrictions)

• GO to HF1

• Base Engine

• Engine System - General Information Section 303-00 of the Workshop Manual.

• Additional Testing

• GO to Z1

P0340 Dodge - Camshaft Position Sensor Circuit Bank 1 Sensor 1 P0340 Dodge Camshaft Position Sensor Circuit Bank 1 Sensor 1

Cam sensor? or Crank sensor? I know that the generic definition of DTC P0340 is "No cam signal at PCM" however, a crank sensor can also be the cause of this code.

A cam sensor normally will not cause a no-start. I can cause a long crank time before starting. The cam sensor signal is only used to sync the fuel injectors. If there is no cam sensor signal the computer will start firing all of the injectors on every revolution of the crankshaft to get the engine running. A crank sensor, however, will cause a no-start condition because it is used to control spark. If there is no crank signal there is no spark...period.

Part of the troubleshooting chart for DTC P0340 on your vehicle includes inspection of the crank sensor and checking for the crank sensor signal at the Powertrain Control Module.

I think it could be the wiring between the crankshaft and/or camshaft sensors. Check for reference voltage at the sensors.

Have you checked for your DTC code?? The code may help you address the issue that is keeping your engine from starting.

ON-BOARD DIAGNOSTICS

1. Cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.

2. Count the number of times the "check engine" lamp on the instrument panel flashes on and off. The number of flashes represents the code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate individual codes. For example, flash-flash-flash [pause] flash-flash represents the code 32.

A code of "55" represents end of error codes. If this is all you get then no error codes are stored in the computer. This is the normal condition for a neon.
CODE Description of Trouble Code
11 Timing belt skipped 1 tooth or more from initial learned value, Intermittent loss of either camshaft or crankshaft position sensor, No crank reference signal detected during engine cranking
12 Direct battery input to PCM was disconnected within the last 50 key-on cycles
13 No change in MAP from start to run
14 MAP sensor voltage too low
15 No vehicle speed sensor signal
17 Closed loop temp not reached or engine cold too long
21 02s sensor problem (oxygen sensor), upstream or down stream
22 Engine coolant temp sensor out of range
23 Intake air temp sensor out of range
24 Throttle Position sensor out of range
25 Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found
27 Injector control circuit
31 Evap purge flow monitor failure or evap solenoid circuit
32 EGR system failure
33 A/C clutch relay circuit
34 Speed control Solenoid circuits
35 Rad Fan control relay circuit
37 Torque converter clutch solenoid CKT or park/neutral switch failure
41 Generator field not switching properly
42 Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over miles
43 Multiple/ single cylinder misfire
44 Battery temp sensor volts out of range
46 Charging system voltage too low
51 Fuel system lean
52 Fuel system rich
53 Internal control failure
54 No Cam signal at PCM
55 End of error messages (If you get this only, no errors were found)
62 PCM failure SRI mile not stored
63 PCM Failure EEPROM write denied
64 Catalytic Converter Efficiency Failure
65 Power steering switch failure

Good luck and thank you for using fixya and keep us posted

What does that mean? This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.
Symptoms Symptoms can include:

• Hard starting or no start
• Rough running / misfiring

A code P0340 could mean one or more of the following has happened:

• a wire or connector in the circuit could be grounded/shorted/broken
• the camshaft position sensor may have failed
• the PCM may have failed
• there exists an open circuit
• the crankshaft position sensor may have failed

With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

• Visually inspect all the wiring and connectors in the circuit
• Check for continuity in the circuit wiring
• Check the operation (voltage) of the camshaft position sensor
• Replace the camshaft position sensor as required
• Check the crankshaft position circuit as well
• Replace circuit wiring and/or connectors as required
• Diagnose/replace the PCM as required

code 11 means intermittent loss of either camshaft or crankshaft position sensor. check connections to both sensors. also look for any damage to the wires connected to each sensor. either sensor will set off a signal to pcm of a no crank referance signal detected during engine cranking.

A code P0340 could mean one or more of the following has happened:

•a wire or connector in the circuit could be grounded/shorted/broken
•the camshaft position sensor may have failed
•the PCM may have failed
•there exists an open circuit
•the crankshaft position sensor may have failed

With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

•Visually inspect all the wiring and connectors in the circuit
•Check for continuity in the circuit wiring
•Check the operation (voltage) of the camshaft position sensor
•Replace the camshaft position sensor as required
•Check the crankshaft position circuit as well
•Replace circuit wiring and/or connectors as required
•Diagnose/replace the PCM as required

SYMPTOM
P0320 - NO CRANK REFERENCE SIGNAL AT PCM

WHEN MONITORED
With the ignition ON.

SET CONDITION
No signal from the Crankshaft Position Sensor is present during engine cranking, and at least 3 Camshaft Position Sensor signals have occurred.

POSSIBLE CAUSES

• CKP signal circuit shorted to voltage
• Tone wheel/flexplate damaged
• 5 volt supply circuit open
• Irregular lab scope pattern of CKP signal
• Stray signal from the Camshaft Position Sensor
• Wiring harness intermittent problem
• Sensor ground circuit open
• CKP signal circuit open
• CKP signal circuit shorted to ground
• 5 volt supply circuit shorted to CKP signal circuit
• CKP signal circuit shorted to sensor ground circuit
• Powertrain Control Module (CKP signal circuit)
• Powertrain Control Module (sensor ground circuit)
• Crankshaft Position Sensor

SYMPTOM
P0700 - EATX CONTROLLER DTC PRESENT

WHEN MONITORED
Ignition key ON, Continuously.

SET CONDITION
Any DTC sets in the Transmission Control Module.

POSSIBLE CAUSES

• TCM DTC present set in PCM