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Low voltage supply to epb module on my 2004 2.7d s type. what is the cause? fault code c1785. any solutions

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ginko
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SOURCE: 4 Faults detected on engine diagnostics check

Try first unplugging battery cable for ten minutuse, to reset ECM, and do a scan again, there are too many unrelated error codes at the same time

Posted on Oct 06, 2008

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What is a b2293 code on 2003 mercury mountaineer


B2293

Pinpoint Test H: LFC 19 and 21/DTC B2293 - Restraint System Airbag Status
Normal Operation
The restraints control module (RCM) checks all of the front air bag circuits for faults. If the RCM detects one of the following faults on any of the front air bag circuits, it will store diagnostic trouble code (DTC) B2293 in memory and, depending on the fault, flash either lamp fault code (LFC) 19 or 21 (or higher priority code if one exists) on the air bag indicator.
Fault Conditions
The RCM monitors for the following fault conditions:
  • low resistance.
  • circuit open.
  • circuit short to voltage.
  • circuit short to ground.
Possible Causes
A driver air bag status fault can be caused by:
  • damaged wiring, terminals, or connectors.
  • a faulty clockspring.
  • a faulty driver air bag module.
  • RCM is faulted.
A passenger air bag status fault can be caused by:
  • damaged wiring, terminals, or connectors.
  • a faulty passenger air bag module.
  • RCM is faulted.
21 Restraint System - Air Bag Status (Passenger Front Air Bag Circuit Fault) Go To Pinpoint Test H .

Sep 06, 2016 | 2003 Mercury Mountaineer

2 Answers

Getting trouble code 106. What is solution for correcting this problem. Thank you. 2005 crossfire.


Chrysler codes,. only.

p0106,

on newer Chysler, cars they have many codes with 106, leaving out the prefix is bad idea.

Like U0102

or C0106?

P0106 is MAP performance failure. (that dont mean replace it)

the puter has no IDEA what is wrong, only that tests failed.

here are the conditions.

When Monitored and Set Condition



  • When Monitored: Engine running for at least 30 seconds and no fault in the throttle valve actuator.


  • Set Condition: Low limit: The Manifold Absolute Pressure (MAP) Sensor reading is below a calculated value when the throttle valve angle is greater than 80F for approximately 5 seconds. High limit: The MAP Sensor reading is greater than a calculated value that is determined by engine speed and throttle valve angle for approximately 5 seconds.




now in gringo or bar stool.

1: the puter brain saw you go near wide open throttle and the

map sensor (vacuum sensor) do not show new zero vacuum.

even a clogged air filter could do this, causing a false high vacuum







POSSIBLE CAUSES




MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL CIRCUIT OPEN




MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND




MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE




5-VOLT SUPPLY CIRCUIT OPEN




5-VOLT SUPPLY CIRCUIT SHORT TO GROUND




5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE




5-VOLT SUPPLY CIRCUIT SHORT TO SENSOR GROUND CIRCUIT




MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIRCUIT




MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO 5-VOLT SUPPLY CIRCUIT




SENSOR GROUND CIRCUIT OPEN




ENGINE OIL SENSOR




MANIFOLD ABSOLUTE PRESSURE SENSOR




POWERTRAIN CONTROL MODULE






then the FSM goes to step by step tests. to find above reasons.

omitted. (too long )



the word low is ambiguous in all FSM.

it can mean, low plenum pressure,

or low vacuum (opposite)

and low voltage, its a pain in the xxx to find this fact out.

the map outputs high voltage for low vacuum (same as high absolute pressure)



the fsm tests are inane.

we check the voltage out of the map

at keyon

running

and wide open throttle for 1 second. just gun it and watch.

here is what it does.

left side is wide open throttle, idle is 20 inchs. key on is, WOT.

so, what is that

4.5v is keyon

start engine, get about 1.5v

the gun engine, then drop throttel to zero throttle fast

the causes,. huge vacuum about 24 inches, or 1v or less

this is a working MAP. if those tests pass.

the test (OBD2 monitor) fails for about not getting near 4vdc from MAP output pin, DOES THIS HELP?





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Jul 07, 2014 | Cars & Trucks

1 Answer

P1750 code


P1750 Electronic gear selector module. Low control unit supply voltage too low.


Clear this fault first, as gear position sensor is not saying transmission is in P or N in order for engine to start. Check voltage at battery. Should be 12.65 if fully charged.

Low voltage causes false codes too and if too many set they will need clearing. Spilling tea coffee or soda down the shift gate can cause similar problems. Also the wiring to the transmission can become oil soaked and not pass full voltage to shift module at the connector.
It is also possible this code has nothing to do with a no start and you have another componet failure. .

Oct 09, 2013 | Mercedes-Benz Cars & Trucks

1 Answer

Toyota hiace powervan fault code p1229 keeps showing any cures


P1229 - Toyota Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled Description Engine control module (ECM) - sensor supply voltage low/high
Cause Wiring, APP sensor, throttle motor position sensor, MAF sensor, fuel tank pressure sensor, TP sensor(s), refrigerant pressure sensor

or you can ask the 24 hrs live technical support Multi Diag, they will like to help you, good luck

Jul 04, 2013 | Cars & Trucks

1 Answer

Code P 0403 on 2002 Chrysler Town and Country mean?


OBD Code P0403refers to
The Exhaust Gas Recirculation (EGR) system is controlled by a vacuum solenoid. The solenoid is supplied ignition voltage. The Powertrain Control Module (PCM) controls the vacuum solenoid by grounding the control circuit(ground) or driver. The primary function of the driver is to supply ground for the object that is being controlled. Each driver has a fault circuit that the PCM monitors. When the PCM turns a component on, the control circuit voltage is low, or close to zero. When the component is turned off, the voltage on the control circuit is high, or near battery voltage. The PCM watches for these conditions, and if it doesn\'t see the proper voltage at the proper time, this code is set.

Possible causes of OBD code P0403
The causes for a P0403 EGR code could be any of the following: Bad EGR solenoid Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness Poor connection at the EGR solenoid harness (worn or loose pins) Water intrusion at the EGR solenoid harness Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance Loss of supply voltage to EGR solenoid Bad PCM

Sep 14, 2012 | 2002 Chrysler Town & Country

1 Answer

CodesFEILED ECM-TCM


There are a couple of possibilities here. That type of code can set due to low battery voltage at one or more of your computer modules. The integrity and codition of the battery and charging system should be verifeid FIRST. If you have had to jump-start your vehicle (for whatever reason) this could be the cause of this code. If this is the reason for it, all that needs to be done is to repair whatever caused the low battery condition and clear the code.

Otherwise, there is a problem in the data circuits between the modules in your vehicle. If there has not been a low or shorted battery condition, then there is most likely an open circuit in your CCD BUS (network circuit wires) You will have to diagnose the problem with a scan tool that has the capabilities to access the ENTIRE computer network in your vehicle to determine where the problem is actually located. Possible causes are broken wires, or loose or corroded connectors, or a failed computer module. Please note that computer module failures are relatively RARE. I do not recommend replacing ANY computer module without FIRST performing proper diagnostics to PROVE that a loss of communication is the fault of the module itself and not the circuits leading to it.

Oct 27, 2011 | 1997 Dodge Grand Caravan

1 Answer

Automatic transmission not shifting correctly revs way up before shifting 2003 yukon 1500


I would recommend checking the fluid level and scanning your Powertrain Control Module (PCM) for fault codes. The syptoms you are describing can be caused by low fluid, low fluid pressure, worn-out clutches, malfunctioning shift control solenoids, or even a defective ignition switch not supplying the correct voltage to the transmission. Retrieving fault codes can help you tremendously in knowing which system is causing your problem and start you into the correct troubleshooting sequence.

I believe the FIRST and EASIEST thing that should be checked is the transmission fluid level. If it is low, you need to find out where it is leaking from.

Jul 28, 2011 | GMC Yukon Cars & Trucks

1 Answer

Engine light on. scanned and p1388 code. What is the meaning of this code?


P1338 - Fuel Pump feedback circuit low/high voltage. This is indicating that your fuel pump is either getting too much voltage or too little voltage as is sensed by the fuel pump control module. Now, this can be caused by either bad wiring connections or a battery not charging causing low voltage. Should read 14 1/2 volts if charging at 1500 rpms

Apr 15, 2011 | 2002 Jaguar S-Type

2 Answers

Park brake won't release


Often caused by low battery voltage - quick check = disconnect battery (make sure you have your radio code) leave for 10 mins then refit. follow instructions on dash board information screen. If the brake resets okay - its a battery low voltage fault - if not .......... you have a handbrake module or motor fault.
Hope this helps - good luck.

Dec 30, 2010 | 2005 Jaguar S-Type

1 Answer

My jagaur 2006 2.7cc is indicated that parkbrake foult and cannot put it on drive


Park brake fault - Normally caused by low battery voltage. Try a reset.
Make sure you have your radio code !
Disconnect negative on battery - leave for 15 minutes then reconnect.
Apply foot brake then apply handbrake switch.
If this does not work you may have a park brake module/pump issue - that means main dealer fault reading visit
Hope this helps
- good luck.

Oct 04, 2009 | 2006 Jaguar S-Type

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