U0113 code meaning
Lost Communication With Emissions Critical Control Information
Network system Generic code U01xx codes Check engine light
What U0113 means
Unlike its neighbours, U0113 does not name one unit but a class of data: messages a controller depends on for emission control, for instance torque, speed or aftertreatment status supplied by another node. CARB's OBD II rule wants silence from a digital input recognised as a fault of its own with a dedicated code, and U0113 is the generic slot for that situation. Ford's 2014 five-digit code interpretation for its engine controllers includes U0113; which frames belong to it and how long they may be absent is not published by any maker. Implausible data of the same kind falls under U0441. Because the engine then has to use substitute values, a lit MIL and possibly reduced power are the likely outcome.
U0113 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0113
- MIL on
- Engine on substitute values, possibly reduced power
- Further U codes in other modules
Common causes of U0113
- Most likelyFault in the CAN wiring or connectors carrying the emission-related frames
- PossibleSending module without power, ground or wake-up
- PossibleSoftware or configuration mismatch after module replacement or update
- Less likelyReceiving controller internally faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Vehicle networkCAN bus wiring
What each part of U0113 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 13 | The exact fault in that area. |
What to do next
- Note U0113 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0113
What does U0113 mean?
U0113 means "Lost Communication With Emissions Critical Control Information". Unlike its neighbours, U0113 does not name one unit but a class of data: messages a controller depends on for emission control, for instance torque, speed or aftertreatment status supplied by another node. It is a generic code, so it means the same on every make.
Is it safe to drive with U0113?
Drive gently and only to a workshop. With U0113 the car can go into limp mode (reduced power) to protect itself.
Will U0113 fail an emissions test?
Yes, it can. U0113 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0113 to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will U0113 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.