Tip & How-To about Ford Expedition

OD light flashes

The flashing OD light indicates there is a problem in the transmission control system. When the Transmission Control Unit detects a malfunction it will flash the OD light and store a Diagnostic Trouble Code (DTC) in the computer. You will need to have a Ford Dealer pull the codes and determine exactly what is wrong.I wish I could be more specific, but there are about 120 different reasons for the flashing OD light.

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2006 wrench light is on


Powertrain Malfunction (Wrench) Warning Indicator (base instrument cluster)
The instrument cluster receives the powertrain status from the PCM over the high speed CAN. When a powertrain system concern is detected, the PCM sends the instrument cluster a command signal to illuminate the powertrain malfunction (wrench) warning indicator. If the 4WD control module detects a failure with the 4WD drive system, the 4WD control module sends a message to the instrument cluster over the CAN to illuminate the powertrain malfunction (wrench) warning indicator. On 4.6L engines, if the transmission control module (TCM) detects a failure with the transmission, the TCM sends a message to the instrument cluster over the CAN to illuminate the powertrain malfunction (wrench) warning indicator.
better have it checked !
Bett

Sep 10, 2016 | 2006 Mercury Mountaineer AWD

2 Answers

OD light flashed, now it will go into reverse but why not drive?


The flashing of the OD light is the transmission control module informing you of a problem with the transmission. You will need a scan tool that can communicate with this module to retreive the codes and help isolate the problem. You can also try disconnecting the battery to reset the module and see if it corrects the problem. If it does, Have the codes scanned as this problem may come back

Dec 18, 2015 | Ford Escape Cars & Trucks

1 Answer

overdrive light flashing


Overdrive (O/D) Off
The O/D OFF indicator illuminates when the transmission is locked out of O/D. This dual function indicator will also flash off and on if a transmission malfunction is detected.
This means there is probably a DTC - diagnostic trouble code stored in the transmission control module ! You'll need to take it to a repair shop !
This

Mar 07, 2015 | 1998 Ford Explorer

1 Answer

ford ranger transmission wont shift on its own and overdrive light is flashing


The OD light is flashing to indicate a fault is set in the Transmission control module. Have the system scanned to see what that code is. Based on my experience with this model the transmission will need to be rebuilt ior replaced with a factory rebuilt unit.

Mar 20, 2014 | Cars & Trucks

1 Answer

1997 honda accord tranmission problem code p0700 drive 4 flashes


Many vehicles have a control module for the automatic transmission called a transmission control module (TCM). The engine control module (ECM) communicates with the TCM to monitor the automatic transmission for faults. If the TCM detects a fault in the automatic transmission and sets a transmission related fault code, the ECM is informed of this also and sets a P0700 in the ECM memory.
This illuminates the Malfunction Indicator Lamp (MIL) to let the driver know there is a problem. If this code is present and the MIL (Malfunction Indicator Lamp) is illuminated that basically means there is at least one transmission code set in the TCM's memory. P0700 is an informational code only. It doesn't point to a direct fault in the engine, only a general fault in the transmission. More diagnosis is necessary to identify what the transmission fault is. This requires a scan tool that will communicate with the transmission module.

Symptoms Symptoms of a P0700 DTC may include:
  • Malfunction Indicator Lamp (MIL) illumination
  • The transmission may exhibit drivability problems like slipping, etc.
Causes More often then not, the cause of this code is that there is a transmission problem of some kind. The TCM detected the problem and set a code. P0700 means that a fault code is stored in the TCM. However this doesn't rule out the possibility of a failed PCM or TCM (unlikely).
Possible Solutions For a P0700 the only real solution is to acquire a scan tool that will communicate with the transmission control module. Extracting this code from the TCM will be the first step in repairing the fault in the transmission.
If the TCM compatible scan tool will not communicate with the Transmission Control Module then that is a good indication that there may be a fault with the TCM itself.

Oct 20, 2012 | 1997 Honda Accord

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