P0209 Injector 9 Control Circuit
* 2509 code is set when one or both batteries are weak or dead.
P2509 has a TSB 18-001-07 which is a flash
This is where I got the 2509 info:
»dodgeforum.com/forum/dodge-cummi ··· 509.html
* The rest came from Allpar.
P1740 Torque Reduction Signal Circuit: Overdrive and TCC Solenoid Rationality
Al Steier wrote that P1740 is a Chrysler-only code. On RE transmissions, the computer was looking for a drop in engine speed after the overdrive solenoid or torque converter clutch were applied; since lockup comes in fourth gear, it doesnt know whether the rpm drop is due to moving to overdrive or locking the torque converter. If a truck shows P1740 is probably has one of two problems: a bad overdrive or torque converter solenoid, or bad torque converter material so that the torque converter clutch cannot hold lockup.
Original is at Chrysler, Dodge, and Jeep Computer Error Codes »www.allpar.com/fix/computer-code ··· H9YUwCg7
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