C1245 on 2003-2009 Toyota 4Runner — Manufacturer-specific chassis code - definition not established
1 vehicles · 1 makes · $1,200-$3,000 repair
Most Reported On
C1245 is an OBD-II diagnostic trouble code meaning “Manufacturer-specific chassis code - definition not established.” C1245 is a manufacturer-specific chassis code, and available references disagree sharply on what it means. Different sources assign it to a Toyota acceleration/deceleration sensor output fault, a GM ABS valve coil circuit fault, and a Nissan outside air temperature sensor signal fault. No single definition could be confirmed against manufacturer service information, so it is not defined here. Look this code up in the service information for your specific make, model, and year before replacing any part. This code is most commonly reported on 2003-2009 Toyota 4Runner, with repair costs ranging from $1,200 to $3,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C1245 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 C1245 mean?
C1245 stands for "Manufacturer-specific chassis code - definition not established." C1245 is a manufacturer-specific chassis code, and available references disagree sharply on what it means. Different sources assign it to a Toyota acceleration/deceleration sensor output fault, a GM ABS valve coil circuit fault, and a Nissan outside air temperature sensor signal fault. No single definition could be confirmed against manufacturer service information, so it is not defined here. Look this code up in the service information for your specific make, model, and year before replacing any part.
What are the most common causes of C1245?
The most common causes of C1245 are: Definition not established - do not diagnose from a generic definition, Check the manufacturer's own service information for this code, A sub-code or symptom byte (for example C1245-45) is often required to identify the exact fault. The specific cause varies by vehicle.
How much does it cost to fix C1245?
Repair costs for C1245 range from $1,200 to $3,000, depending on the vehicle and root cause.
Which vehicles are affected by C1245?
Au7o has documented C1245 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.