Join Now
International Automotive Technicians Network

P0340 Diagnostic Trouble Code Discussion for April 2009

CMP Sensor Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0340
Help Request Posted
1999 Ford E-150 Econoline 4.2L Hesitation, Stall, MIL Lamp on VIN: 1FTRE142XX
P0340: cam sensor. This van came in with a stalling problem and a code 340 cam sensor.I haved checked the fuel presure and cam sensor alignment both ok.Cam sensor was replaced with a new ford unit, ecm was also replaced. I unpluged the alt to eliminate ac voltage leakage as a pr...
April 06, 2009
2000 Ford E-150 Econoline 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTRE1421Y
P0340: cmk sensor circuit. I have this e150 that came in sputtering and barely idling with a check engine light on. Off idle engine smooths out.I ran a smoke test as a bad pcv elbow has caused this sympton many times.I found no leak but replaced a weathered hose anyway. A little researc...
April 10, 2009
1996 Chevrolet Express 1500 5.7L MIL Lamp on VIN: 1GBFG15RXT
P0340: CMP Sensor Circuit Malfunction. hello fellow techs have a problem child here. i have a van with a 5.7 with a continiuous po340.i have replaced the cam sensor ,crank sensor,with no change. so i go to my mitchell and go through the diagnostics chart.says to check voltage at signal wire. for 5-...
April 15, 2009
1999 GMC Savana 2500 5.0L No Start VIN: 1GTFG25M8X
P0340: CMP Sensor Circuit Malfunction. van came in crank no start. died out on road. i have good spark fuel pressure and compression, but still no start. at a total loss as to where to go next. tried doing a security system relearn no change. tried starting fluid no different. all scan data looks g...
April 16, 2009
2003 Nissan Sentra GXE 1.8L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 3N1CB51D73
P0340: Camshaft Position Sensor Circuit Malfunction. ... or will run very poorly when cold. If I can keep it running long enough it will eventually clean up and start running fine. When it is doing this, code P0340 CMP fault sets immediately. The customer has replaced both the CMP and CKP sensors with multiple f...
April 17, 2009
1999 Ford Explorer Eddie Bauer 5.0L MIL Lamp on VIN: 1FMZU35PXX
P0340: Cam sensor open or shorted. ... explorer we picked up at auction last week.When we got it check engine light on code P0340 (cam sensor open or shorted) and had a severe bucking at cruising speeds w/ light throttle (would go away if more throttle applied). I replaced the cam sensor and ho...
April 18, 2009
2001 Dodge Ram 2500 Truck 5.9L MIL Lamp on VIN: 3B7KF26651
P0340: No Camshaft Sensor Signals At PCM. Hello , This vehicle came to us with a rod out the side of the block. Found a used engine at salvage yard out of a 2000 model truck. Engine would not start right after installation so we installed original ECM. Engine started & ran fine. Check engine light...
April 20, 2009
1999 Ford Explorer Eddie Bauer 5.0L MIL Lamp on VIN: 1FMZU35PXX
P0340: Cam sensor open or shorted. ... explorer we picked up at auction last week.When we got it check engine light on code P0340 (cam sensor open or shorted) and had a severe bucking at cruising speeds w/ light throttle (would go away if more throttle applied). I replaced the cam sensor and ho...
April 21, 2009
1997 Chrysler Cirrus LX 2.5L Hesitation, MIL Lamp on VIN: 1C3EJ56H4V
P0340: No Camshaft Sensor Signals To PCM. Vehicle came in intermittently running poorly. When running poorly we find trouble codes indicating loss of cam signal at pcm. Inspected all wiring, connections, etc. and found everything ok. We ended up replacing the distributor (cam sensor) then the cranksha...
April 28, 2009
2003 Chrysler PT Cruiser 2.4L Cuts out, MIL Lamp on VIN: 3C4FY48B13
P0340: Camshaft Position Sensor Circuit Malfunction. ... PT will on occasion not rev above 2000 rpm. There is always a P0340 code set. During previous attempts to rectify the problem, the crankshaft sensor, camshaft sensor and the magnetic target have all been replaced. The timing belt was changed under preventa...
April 28, 2009
2003 Dodge Stratus SE 2.4L MIL Lamp on VIN: 1B3EL46X23
P0340: No Camshaft Sensor Signals At PCM. ... Stratus 2.4L. Car is in failsafe, engine will only rev to 2000rpm. MIL is on with code P0340, code sets immediately after clearing. Intermittently will set P0344 cam signal intermittent and P0138 O2 sensor high volts.Frt O2 varies between 2.0 and 3.2 volts...
April 29, 2009
2004 Ford F-150 FX4 5.4L Misfire, engine noise VIN: 1FTPX14574
... really got me stumped.It came from the ford dealership after they had changed the right hand timing chain and guides because one of the guides broke. They also replaced the right hand cam phaser and the solenoid. When it came to me it had set code p0012 fo...
April 29, 2009
2005 Ford F-150 FX4 5.4L Hesitation, Cuts out, MIL Lamp on VIN: 1FTPW14555
P0340: cmp ckt malfunstion b1. customer parked truck for around 4 days when restarted truck ran fine until he drove down the road then it ran rough, has top end noise and momentary loss of oil pressure. both cam sensors have been replaced and oil changed with 5w20 syn blend runs fine at idl...
April 29, 2009
1995 Jaguar XJR 4.0L delayed start VIN: SAJPX114XS
P0340: Cam position sensor missing or implausible. There is no ignition [earth] signal whatsoever to any of the coils during the first 5 to 7 seconds of cranking. From cold it will sputter and stall for the first two long cranks, and start and run fine on the third. From hot it will usually start on the firs...
April 29, 2009
1998 Ford Windstar GL 3.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2FMDA5148W
P0340: Cam pos. sensor fault. Misfiring occures heavier when moderately excelerating. Mil was on when first recieved. After parts mil cleared and did not return. Until after 2nd day. checked codes and Cam sensor code returned. Syncro was never removed or moved only cam sensor replaced. Cus...
April 30, 2009
1996 Mercury Sable GS 3.0L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1MELM50U3T
P0340: cam sensor circuit problem. vehicle came in running very rough customer said cel on for long time .scanned anyhow found code po340 cam sensor circuit. found cam sensor dangling by connector and cam synchronizer housing destroyed .could not determine location of plug originally.rolled eng...
April 30, 2009
2003 Nissan Sentra GXE 1.8L Cuts out, Misfire VIN: 3N1CB51DX3
P0340: Camshaft Position Sensor Circuit Malfunction. ... ignition is turned off for a second. This happens when vehicle is cold. Once it comes up to temp runs fine. It keeps setting a hard code P0340 camshaft postion sensor. I have replaced both cam and crank sensor with udated ones, and reprogramed ecm with the...
April 30, 2009
1999 Ford E-150 Econoline 4.2L Hesitation, Stall, MIL Lamp on VIN: 1FTRE142XX
P0340: cam sensor. This van came in with a stalling problem and a code 340 cam sensor.I haved checked the fuel presure and cam sensor alignment both ok.Cam sensor was replaced with a new ford unit, ecm was also replaced. I unpluged the alt to eliminate ac voltage leakage as a pr...
April 06, 2009
2000 Ford E-150 Econoline 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTRE1421Y
P0340: cmk sensor circuit. I have this e150 that came in sputtering and barely idling with a check engine light on. Off idle engine smooths out.I ran a smoke test as a bad pcv elbow has caused this sympton many times.I found no leak but replaced a weathered hose anyway. A little researc...
April 10, 2009
1996 Chevrolet Express 1500 5.7L MIL Lamp on VIN: 1GBFG15RXT
P0340: CMP Sensor Circuit Malfunction. hello fellow techs have a problem child here. i have a van with a 5.7 with a continiuous po340.i have replaced the cam sensor ,crank sensor,with no change. so i go to my mitchell and go through the diagnostics chart.says to check voltage at signal wire. for 5-...
April 15, 2009
1999 GMC Savana 2500 5.0L No Start VIN: 1GTFG25M8X
P0340: CMP Sensor Circuit Malfunction. van came in crank no start. died out on road. i have good spark fuel pressure and compression, but still no start. at a total loss as to where to go next. tried doing a security system relearn no change. tried starting fluid no different. all scan data looks g...
April 16, 2009
2003 Nissan Sentra GXE 1.8L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 3N1CB51D73
P0340: Camshaft Position Sensor Circuit Malfunction. ... or will run very poorly when cold. If I can keep it running long enough it will eventually clean up and start running fine. When it is doing this, code P0340 CMP fault sets immediately. The customer has replaced both the CMP and CKP sensors with multiple f...
April 17, 2009
1999 Ford Explorer Eddie Bauer 5.0L MIL Lamp on VIN: 1FMZU35PXX
P0340: Cam sensor open or shorted. ... explorer we picked up at auction last week.When we got it check engine light on code P0340 (cam sensor open or shorted) and had a severe bucking at cruising speeds w/ light throttle (would go away if more throttle applied). I replaced the cam sensor and ho...
April 18, 2009
2001 Dodge Ram 2500 Truck 5.9L MIL Lamp on VIN: 3B7KF26651
P0340: No Camshaft Sensor Signals At PCM. Hello , This vehicle came to us with a rod out the side of the block. Found a used engine at salvage yard out of a 2000 model truck. Engine would not start right after installation so we installed original ECM. Engine started & ran fine. Check engine light...
April 20, 2009
1999 Ford Explorer Eddie Bauer 5.0L MIL Lamp on VIN: 1FMZU35PXX
P0340: Cam sensor open or shorted. ... explorer we picked up at auction last week.When we got it check engine light on code P0340 (cam sensor open or shorted) and had a severe bucking at cruising speeds w/ light throttle (would go away if more throttle applied). I replaced the cam sensor and ho...
April 21, 2009
1997 Chrysler Cirrus LX 2.5L Hesitation, MIL Lamp on VIN: 1C3EJ56H4V
P0340: No Camshaft Sensor Signals To PCM. Vehicle came in intermittently running poorly. When running poorly we find trouble codes indicating loss of cam signal at pcm. Inspected all wiring, connections, etc. and found everything ok. We ended up replacing the distributor (cam sensor) then the cranksha...
April 28, 2009
2003 Chrysler PT Cruiser 2.4L Cuts out, MIL Lamp on VIN: 3C4FY48B13
P0340: Camshaft Position Sensor Circuit Malfunction. ... PT will on occasion not rev above 2000 rpm. There is always a P0340 code set. During previous attempts to rectify the problem, the crankshaft sensor, camshaft sensor and the magnetic target have all been replaced. The timing belt was changed under preventa...
April 28, 2009
2003 Dodge Stratus SE 2.4L MIL Lamp on VIN: 1B3EL46X23
P0340: No Camshaft Sensor Signals At PCM. ... Stratus 2.4L. Car is in failsafe, engine will only rev to 2000rpm. MIL is on with code P0340, code sets immediately after clearing. Intermittently will set P0344 cam signal intermittent and P0138 O2 sensor high volts.Frt O2 varies between 2.0 and 3.2 volts...
April 29, 2009
2004 Ford F-150 FX4 5.4L Misfire, engine noise VIN: 1FTPX14574
... really got me stumped.It came from the ford dealership after they had changed the right hand timing chain and guides because one of the guides broke. They also replaced the right hand cam phaser and the solenoid. When it came to me it had set code p0012 fo...
April 29, 2009
2005 Ford F-150 FX4 5.4L Hesitation, Cuts out, MIL Lamp on VIN: 1FTPW14555
P0340: cmp ckt malfunstion b1. customer parked truck for around 4 days when restarted truck ran fine until he drove down the road then it ran rough, has top end noise and momentary loss of oil pressure. both cam sensors have been replaced and oil changed with 5w20 syn blend runs fine at idl...
April 29, 2009
1995 Jaguar XJR 4.0L delayed start VIN: SAJPX114XS
P0340: Cam position sensor missing or implausible. There is no ignition [earth] signal whatsoever to any of the coils during the first 5 to 7 seconds of cranking. From cold it will sputter and stall for the first two long cranks, and start and run fine on the third. From hot it will usually start on the firs...
April 29, 2009
1998 Ford Windstar GL 3.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2FMDA5148W
P0340: Cam pos. sensor fault. Misfiring occures heavier when moderately excelerating. Mil was on when first recieved. After parts mil cleared and did not return. Until after 2nd day. checked codes and Cam sensor code returned. Syncro was never removed or moved only cam sensor replaced. Cus...
April 30, 2009
1996 Mercury Sable GS 3.0L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1MELM50U3T
P0340: cam sensor circuit problem. vehicle came in running very rough customer said cel on for long time .scanned anyhow found code po340 cam sensor circuit. found cam sensor dangling by connector and cam synchronizer housing destroyed .could not determine location of plug originally.rolled eng...
April 30, 2009
2003 Nissan Sentra GXE 1.8L Cuts out, Misfire VIN: 3N1CB51DX3
P0340: Camshaft Position Sensor Circuit Malfunction. ... ignition is turned off for a second. This happens when vehicle is cold. Once it comes up to temp runs fine. It keeps setting a hard code P0340 camshaft postion sensor. I have replaced both cam and crank sensor with udated ones, and reprogramed ecm with the...
April 30, 2009