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Symptoms of a bad pcm

No start problem

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How to tell if body controll modgul is bad will not go to 4 cylender mode when warm


Symptoms of a Bad Body Control Module - Buzzle

www.buzzle.com/articles/symptoms-of-a-bad-body-control-module.html
Dec 31, 2014 - Let's take a look at the signs that indicate body control module failure. ... Shock: This module can be in jeopardy if the car was subjected to ...

What all does the BCM control? What are the symptoms of a bad one ...

www.chevyhhr.net/.../what-all-does-bcm-control-what-symptoms-bad-o...
Feb 21, 2012 - It would also shift really hard, and die if I did not 2 foot it. ... The BCMalso talks to the PCM, RBCM, Airbag Control Module, and the Factory ...

What a Faulty PCM and BCM Can Cause... - YouTube

? 3:50
https://www.youtube.com/watch?v=2rudYtZUahQ
Feb 24, 2011 - Uploaded by DanielJaegerFilms
Thought the ECM was bad so I replaced it. ... Once I get the $$$ together to test/replace, I'll update you on if it .... Someone pleasetell me how to fix this. ... In automotive electronics, BCM (body control module) is a generic term ...

Jan 07, 2016 | Cars & Trucks

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What are the symptoms of a bad PCM?


Symptoms of a Bad PCM , vehicle won't start an run sometimes ! You have other modules involved here ! ABS an BRAKE light lit are problems with the anti-lock brakes ! A sensor maybe ! You need to have the vehicles modules scanned for DTC's - diagnostic trouble codes . An depending what year , make an model vehicle it can have several hundred different codes possible. Newer vehicles have up wards of 10 or more modules .Your going to need a better grade scan tool like the one in this video ! Auto Repair The OTC Genisys Touch Scan Tool Sounds like you need to take this to a pro !

Feb 22, 2015 | Cars & Trucks

1 Answer

Symptoms of a bad pcm


Could be. But these are also symptoms of a bad ground wire. Check the engine to body ground.

Apr 07, 2014 | 1998 Dodge Ram 2500 2WD

1 Answer

Fuel shut off switch location


post symptoms.?

the above makes no sense.
the PCM controls fuel at ALL times. (and rules, and logic)

is car cranking ok and not starting, then say so.
if try , check spark first ,because, the PCM cuts fuel anytime it finds bad spark, by DESIGN.

Jan 27, 2014 | Honda CR-V Cars & Trucks

1 Answer

Bad pcm symptoms


There are no symptoms that point directly to a PCM. The way a PCM is usually diagnosed is by confirming that everything into it is good and even then it's iffy.

Aug 16, 2013 | Ford Windstar Cars & Trucks

1 Answer

Po441 2002 Hyundai, engine hard starting after fill up


Most likely is a bad EVAP purge valve. But check below list.
This indicates that a part of the EVAP control system is no longer functioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle'sicon1.png fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

EVAP emission canister purge is controlled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light.
Causes

A code P0441 could mean one or more of the following has happened:

  • Bad vacuum switch
  • Broken or damaged EVAP line or canister
  • Open in PCM purge command circuit
  • Open or short in Voltage feed circuit to Purge Solenoid
  • Faulty purge solenoid
  • Restriction in EVAP solenoid, line or canister
  • Corrosion or resistance in purge connector
  • Bad PCM
Possible Solutions

With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Replace Leak Detection Pump / LDP
  • Repair damaged EVAP lines or canister
  • Repair open or short in voltage feed circuit to Purge Solenoid
  • Repair open in PCM purge command circuit
  • Replace purge Solenoid
  • Replace vacuum switch
  • Repair restriction in Evap line or canister or solenoid
  • Repair resistance in purge connector
  • Replace PCM

Oct 24, 2012 | Hyundai Elantra Cars & Trucks

1 Answer

P0107 gm code


What does that mean?

The Manifold Absolute Pressure (MAP) sensor responds to changes in the intake manifold pressure (vacuum). 5 Volts is supplied to the sensor from the PCM (powertrain control module). Inside the MAP sensor is a resistor that moves in relation to manifold pressure. The resistor varies the voltage between about 1 volt to 4.5 volts (depending on engine load) and that voltage signal is returned to the PCM to indicate manifold pressure (vacuum). This signal is essential for the PCM to determine fuel delivery. A P0107 DTC is set when the PCM sees that the MAP signal voltage is less than .25 volts which is too low.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Potential Symptoms

Anytime the MAP sensor signal is low the vehicle will likely have a very difficult time starting. Other symptoms may include:

  • Hard to start
  • Long cranking times
  • Sputtering/missing
  • Blowing black smoke
  • Poor fuel economy
  • Dies intermittently
  • MIL(Malfunction Indicator Lamp) illumination
Causes

The causes of a low MAP sensor signal circuit (P0107) could be any of the following:

  • Bad MAP sensor
  • Open or short in the signal circuit
  • Open or short in the 5 Volt reference circuit
  • Ground circuit open or shorted
  • Bad PCM

Jun 22, 2012 | 2008 Pontiac G6

1 Answer

Code's 202 and 302


Both fault codes walk together, the first generated the second...

DTC P0202 - Cylinder 2 Injector Circuit Malfunction
P0202 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0202 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM


DTC P0302 Code - Cylinder #2 Misfire
A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

A code P0302 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer


If need additional details, just contact us clicking the links. Hope this helps.

Oct 13, 2011 | 2002 Chrysler Town & Country

1 Answer

Check engine light is on and code is PO118 what is it


Symptoms of a P0118 could include:
  • Very poor fuel economy
  • A no start condition
  • Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
  • Illumination of MIL
Causes A code P0118 may mean that one or more of the following has happened:
  • A bad connection at the sensor
  • An open in the ground circuit between the ECT Sensor and the PCM
  • A short in the voltage feed between the sensor and the PCM
  • A bad PCM (less likely)
  • A bad temperature sensor (shorted internally)

Jun 16, 2011 | 2001 Hyundai Accent

1 Answer

97 grand am code P0118


Engine Coolant Temperature Circuit High Input
What does that mean?

The engine coolant temperature (ECT) sensor is a thermistor screwed into a coolant passage in the cylinder head. Sensor resistance is high when coolant temperature is low and resistance drops when coolant temperature increases. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code. Or if the PCM determines the sensor resistance is out of specs, this code is set.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Potential Symptoms

Symptoms of a P0118 could include:

  • Very poor fuel economy
  • A no start condition
  • Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
  • Illumination of MIL
Causes

A code P0118 may mean that one or more of the following has happened:

  • A bad connection at the sensor
  • An open in the ground circuit between the ECT sensor and the PCM
  • A short in the voltage feed between the sensor and the PCM
  • A bad PCM (less likely)
  • A bad temperature sensor (shorted internally)
Possible Solutions

First, if you have access to a scan tool, check the reading of the coolant sensor. Does it read a logical number? If so, the problem is likely intermittent. Perform a "wiggle" test by wiggling the connector and harness to the sensor while watching the reading on the scan tool. Watch for any drop-outs. Drop-outs would indicate a bad connection. If the scan tool reads an illogical temperature, check the resistance of the temperature sensor. If it is out of specs, replace it. If it is in specifications, unplug the sensor and, using a fused jumper wire, jumper the two terminals of the connector together. The temperature reading should now be maxed out to above 250 degrees F. If not, there is likely a problem with the ground circuit or voltage supply.

Check for 5 volts reference voltage at the connector. Also check for ground presence at the connector. If you do not have 5V ref. and/or ground continuity, check for these back at the PCM connector. If you have these at the PCM connector, then repair open or short between the PCM and the sensor. If you do not, remove the offending wire from the PCM and then check for proper voltage at the PCM pin. If it's present now, repair short on the circuit. If it isn't present after removing the wire and checking the pin, replace PCM

NOTE: Usually, P0118 is indicative of a bad temperature sensor, but doesn't rule out these other possibilities. If you're unsure of how to diagnose a PCM, do not attempt. The sensor is located near the thermostat housing on the top of the engine

Nov 04, 2010 | Pontiac Grand Am Cars & Trucks

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