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Can a faulty ECM cause engine and transmission problems?

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  • Cars & Trucks Master
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Yes -- but to find that out you have to run the fault codes
Unless you have had a serious fault (battery connected wrong-power surge ),the ECM is the last item to check
battery was flat or replaced the normally resetting the ECM and CPU programs with a scanner will fix ECM problems.

Posted on Mar 29, 2015

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SOURCE: what causes the following faults code on 2004 volvo S40 :ECM-250A LONG TERM-FUEL TRIM:UPPER LIMIT,BCM-0100 COMMUNICATION PROBLEM WITH ECM,EPS-0082 ENGINE STATUS FAULTY SIGNAL,CCM-001 COMMUNICATION CON

Check, test or replace MAF sensor.

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Posted on Jul 09, 2012

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emissionwiz
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SOURCE: Fault P0700 indicates TCM Faulty or Transmission Failure?

It means either, what it means is this, the Transmission Control module (TCM) has requested the Powertrain control module (PCM) to turn on the check engine light because the TCM has detected a ****** fualt is present, this can be any of a bout 20 problems, that is all it means. What must be done now is to have the TCM scanned for the fault code(s) that alerted the PCM to turn on the CEL.

Posted on Jul 25, 2012

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1995 Honda accord ex v6 automatic transmission of code p1298


Electric Load Detector Circuit High Voltage

Possible causes - Faulty Electronic Load Detector Unit - Faulty Engine Control Module (ECM) - Electronic Load Detector Unit harness is open or shorted - Electronic Load Detector Unit circuit poor electrical connection
Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light)
P1298 Honda Description The Electric Load Detector (ELD) measures the main current flow and sends that signal to the Engine Control Module (ECM) to command the alternator charging system to get fuel efficiency and decrease the drag of the engine when starting.

Aug 09, 2016 | Honda Cars & Trucks

1 Answer

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).


May 06, 2015 | Cars & Trucks

1 Answer

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

Sep 11, 2014 | 1991 Ford F150

1 Answer

Whats ford windstar error codes p0715 mean


I hope this helps and is what your looking for... good luck

http://www.fordobdcode.com/p0715-ford

Ford P0715 OBD-II Trouble Code Definition:
P0715 Input Shaft Speed Sensor Circuit Malfunction
P0715 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0715 Input/Turbine Speed Sensor "A" Circuit What does the code mean? OBD-ii Code P0715 definition:
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). Symptoms Sumptoms of OBD code P0715
- Engine Light ON (or Service Engine Soon Warning Light) - Possible shifting problems Causes Causes of the OBD-II code P0715
- Transmission speed sensor circuit is open or shorted. - Poor transmission speed sensor circuit connection - Faulty transmission speed sensor The Error code is generally activated on detection of the following conditions: Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor. Solutions

Jun 22, 2014 | 1999 Ford Windstar

1 Answer

2005 nissan frontier problem code 1757 and 1759


ObdII Code 1757 means the transmission oil could be burned or the oil pan has excessive dirt in it. There could be internal transmission damage. However, other things that throw that code include a faulty Governor Pressure Sensor, a Faulty Governor Pressure Solenoid, a Faulty Valve Body, an engine Control Module (ECM) 5 volt supply, a 5 volt supply circuit could be open, a 5 volt supply circuit could be open inside the transmission, or a - Faulty Engine Control Module (ECM).

On the other hand, a Code 1759 means a possible faulty Front Brake Solenoid Valve, or a front Brake Solenoid Valve harness is open or shorted, or a Front Brake Solenoid Valve circuit with a poor electrical connection.

Apr 15, 2014 | 2005 Nissan Pathfinder

1 Answer

I have grand cherokee 2001 limited the code p0700 is apper the gear is started scend shift espically in morinig


possible causes
Shorted or open circuit within Transmission Control Module (TCM)
- Faulty Transmission Control Module (TCM)
symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Driveability problems
- Transmission shifting problems
p0700 description
The transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. When the TCM detects a malfunction with the control, a signal is send to the Engine Control Module (ECM) to trigger the Engine Light or Service Engine Soon light. The ECM stores the P0700 code and it means the TCM detected a malfunction with the transaxle controls.

Read more: http://engine-codes.com/p0700_jeep.html#ixzz2hihK6PVo

Oct 14, 2013 | 2001 Jeep Grand Cherokee

1 Answer

I have a suzuki jimny 2002 and get check engine light on and code P1600 an P0763 and when the switch is on i hear the relay on the TCM. can you suggest?


P0763 - Shift Solenoid C Electrical
Possible causes- Faulty shift solenoid C valve
- Shift solenoid C valve harness or connectors
- Shift solenoid C valve circuit is open or shorted
- Low transmission fluid level
- Dirty transmission fluid
When is the code detected?The P0763 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven.Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission will not shift gears.P0763 Description Shift solenoid valve C is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

P1600 - Loss of KAM (Keep Alive ECM memory) Power; Open Circuit

Check all fuses related to the ECM

Jun 22, 2012 | Suzuki Jimny Cars & Trucks

1 Answer

What's your problem?Home > Cars & Trucks > Trouble code PO798...


Generic OBD Error Code Details for P0798 Pressure Control Solenoid "C" Electrical What does this mean?OBD Code P0798refers to
The Engine Control Module (ECM) uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical troubles of the shift solenoid valves and valve body. SymptomsPossible sumptoms of OBD code P0798
- Engine Light ON (or Service Engine Soon Warning Light) - Shift shock CausesPossible causes of OBD code P0798
- Low transmission fluid level - Dirty transmission fluid - Faulty pressure control solenoid valve - Pressure control solenoid valve harness or connectors - Pressure control solenoid valve circuit is open or shorted The Error code is generally activated on detection of the following conditions: The P0798 is triggered when the ECM detects an open or short circuit in shift solenoid valves Possible Solutions

Nov 09, 2011 | 2008 Mercedes-Benz Mercedes Benz Cls Class

1 Answer

PO744 code 2001 infiniti qx4 how do i fix


CODE PO744 AUTOMATIC TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID VALVE FAULT. POSSIBLE CAUSE FAULTY TCC SOLENOID.CHECK TCC SOLENOID WIRING FOR DAMAGE.OR YOU COULD HAVE FAULTY TCM OR ECM. IF THE TCC SOLENOID IS FAULTY YOUR ENGINE WILL STALL OUT AT A RED LIGHT OR STOP SIGN.YOUR ENGINE WILL STALL OUT AT EVERY STOP THAT WOULD BE SIGN FAULTY TCC SOLENOID.IF ENGINE DONT STALL OUT THE TCC SOLENOID COULD COULD BE STUCK OPEN, IF YOUR TORQUE CONVERTER FAULTY IT WILL CAUSE PREMATURE LOCKUP STALLING OUT THE ENGINE.

Nov 01, 2011 | 2007 Infiniti QX4

1 Answer

1998 Chrysler Sebring convertible Not shifting into drive check engine light came on, error code PO715


DTC P0715 CHRYSLER - Input Speed Sensor 1 Circuit
P0715 is detected when TCM or ECM does not receive the proper signal from the sensor.

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).

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible shifting problems

Possible causes
- Transmission speed sensor circuit is open or shorted.
- Poor transmission speed sensor circuit connection
- Faulty transmission speed sensor

Hope this clues helps to solve it.

Jun 02, 2011 | 2003 Chrysler Sebring

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