Mechanics

CODES P0700 AND P0715 HOW TO TROUBLE SHOOT AND WHAT TO LOOK FOR

2004 Chrysler Town and Country • 141,000 miles

The car has shifted gear and engine reved up a couple of times while driving. If I pull over and shut off the engine, it returns to normal operating.

Yesterday engine light came on, but drove fine.

Had the codes checked out today. Gave two codes P0700 and P0715.


P0700

aa Transaxle control system fault
Explanation
aa ECM received a signal that the transaxle control module has a fault
Probable cause
aa1 - Shortened or open circuit within transaxle
aa2 - failure of transaxle control module


P0715

aa The ECM has detected that the input speed changed suddenly
probable cause

aa1 - Open or short circuit condition
aa2 - Poor electrical connection
aa3 - Faulty ISS

Is this one problem or more?

How does one effectively troubshoot to find the cause of the problem?

I would prefer to not replace everything if that can be avoided.
Avatar
Jamsfowler
August 28, 2012.



P0700 is a notification code telling you an error has been detected.

P0715 is the main cause of your problem.

P0715-INPUT SPEED SENSOR ERROR

When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.

Set Condition: If there is an excessive change in the Input RPM in any gear.

Possible Causes

INPUT SPEED SENSOR SIGNAL CIRCUIT OPEN
SPEED SENSOR GROUND CIRCUIT OPEN
INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND
INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
INPUT SPEED SENSOR
POWERTRAIN CONTROL MODULE
INTERMITTENT WIRING AND CONNECTORS

KHLow2008
Aug 28, 2012.
Thanks for the reply.

The current plan is to replace the input and output sensors. Hoping the inexpensive repair does the trick. The results we are hoping for is that the code clears, the check engine light goes off and the problem is corrected.

If that does not work, does it make sense that the problem is with the TCM? Would that be the next logical replacement?

Beyond that, what else might have to be considered?

Tiny
Jamsfowler
Aug 29, 2012.
Before replacement of parts, you should test the circuitry to confirm if there are any open or shorted circuits.

Start by check the sensor connectors. Sometimes connectors gets contaminated by the presence of liquids or the terminals loosened up.

Replacing parts and hoping it solves the problem is not the correct way and it can be costly and time wasting.

If you want the complete diagnostic procedures, let me have an email. The procedures are not easily printed here. For any other queries, please reply to this post and do not reply to my email.

KHLow2008
Aug 29, 2012.
My e-mail is jamsfowler@msn. Com

Would love to have the proceedure e-mailed

Thank you

Tiny
Jamsfowler
Aug 29, 2012.
File has been sent. Please check your mail.

KHLow2008
Aug 30, 2012.