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enginecoderepair.comhttp://p259a.enginecoderepair.com
The reason of P259A OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction. P259A DTC reports a sensor fault, replacement of the sensor is unlikely ...
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.
check the fluid level in the gear box. Too much and not enough will cause overheating. have a pressure test done on the gear box to check for internal problems . Change the transmission fluid. . Have the bands and clutches adjusted to ensure that they are not slipping. If you are pulling trailers /caravans then the weight and speed will be factors that overheat the transmission oil. Run fault codes to check for sensors solenoids and servo faults.
This can have several causes. You could try 2 transmission fluid changes first to see if the fault was a bit of dirt somewhere. Then, is your O/D light blinking? This will indicate the ECM has stored a code indicating what the trouble area is. If there is no O/D light with the O/D switch in or out both, the globe has failed, and it first needs to be replaced so you can read the trouble code. For that your instrument cluster needs to be removed, not a difficult job. See here p111
http://www.turboninjas.com/camry/bo.pdf
Note you only need to do Steps 19, 20, 23 The transmission fault main suspects would be - vehicle speed sensor fault. The ECM doesn't know what speed you are doing - 1 to 2 shift valve fault. Possibly dirt. - less likely is a fault with the shift solenoids. The fault code should tell you about that.
Hi there: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. 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). 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. Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa, have a nice day
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