C2310 on 2015-2023 RAM 1500 (Big Horn, Laramie, Rebel, Limited) — Open or Short Circuit in Battery Circuit
1 vehicles · 1 makes · $1,800-$4,000 repair
Most Reported On
C2310 is an OBD-II diagnostic trouble code meaning “Open or Short Circuit in Battery Circuit.” A Toyota/Lexus code in the shift control (parking lock control) system, set by the transmission/shift control ECU — seen on hybrids and other shift-by-wire vehicles. Battery voltage is constantly applied to the ECU's BATT terminal to keep its memory alive so it remembers the shift actuator's position (P versus non-P) while the vehicle is off. When that BATT circuit is open or shorted, the stored position is cleared each time the power switch is turned off, and the ECU sets C2310. The practical effect is that the actuator must relearn its position at each start, so the time from ignition on to "READY ON" can be longer than normal, often with a shift-system warning. Some sources rate this high severity; it should be diagnosed promptly. This code is most commonly reported on 2015-2023 RAM 1500 (Big Horn, Laramie, Rebel, Limited), with repair costs ranging from $1,800 to $4,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C2310 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C2310 mean?
C2310 stands for "Open or Short Circuit in Battery Circuit." A Toyota/Lexus code in the shift control (parking lock control) system, set by the transmission/shift control ECU — seen on hybrids and other shift-by-wire vehicles. Battery voltage is constantly applied to the ECU's BATT terminal to keep its memory alive so it remembers the shift actuator's position (P versus non-P) while the vehicle is off. When that BATT circuit is open or shorted, the stored position is cleared each time the power switch is turned off, and the ECU sets C2310. The practical effect is that the actuator must relearn its position at each start, so the time from ignition on to "READY ON" can be longer than normal, often with a shift-system warning. Some sources rate this high severity; it should be diagnosed promptly.
What are the most common causes of C2310?
The most common causes of C2310 are: Blown or loose fuse feeding the shift control ECU BATT circuit, Open, shorted, or chafed wiring in the BATT feed circuit, Corroded or backed-out terminal at the shift control ECU connector, Corroded battery terminals, loose battery cables, or a recently disconnected/replaced 12V battery, Bad ground for the shift control ECU, Failed transmission/shift control ECU. The specific cause varies by vehicle.
How much does it cost to fix C2310?
Repair costs for C2310 range from $1,800 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by C2310?
Au7o has documented C2310 across 1 vehicle models from 1 manufacturers: RAM.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.