U042F code meaning
Invalid Data Received From Camshaft Position Control Module
Network system Generic code U04xx codes Check engine light
What U042F means
U042F concerns a camshaft position control module, used where an electric motor with its own electronics moves the phaser instead of an oil valve. The engine controller commands a target angle and receives actual position and status; U042F means those replies arrive but fail plausibility or protection checks, while U012E is set when they stop. For the 2022 Outlander, Mitsubishi's TSB-23-11-003 lists U042F beside U012E, U0101, U0122, U0146 and U0155 among the engine controller's network codes, and its parts list for that engine includes an electric intake valve timing control module. No maker documents more. CARB requires variable valve timing to be monitored for target errors and slow response. Without trusted feedback the controller holds intake timing at a default; expect a MIL, less power and higher emissions.
U042F at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U042F
- Check engine light
- Reduced power and rougher idle
- Higher fuel consumption
Common causes of U042F
- PossibleElectric valve timing control module faulty
- PossibleSupply, ground or connector fault at the module
- Less likelyEngine controller software misjudging the module data
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Camshaft position module
What each part of U042F means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2F | The exact fault in that area. |
What to do next
- Note U042F 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 U042F
What does U042F mean?
U042F means "Invalid Data Received From Camshaft Position Control Module". U042F concerns a camshaft position control module, used where an electric motor with its own electronics moves the phaser instead of an oil valve. It is a generic code, so it means the same on every make.
Is it safe to drive with U042F?
Drive gently and only to a workshop. With U042F the car can go into limp mode (reduced power) to protect itself.
Will U042F fail an emissions test?
Yes, it can. U042F 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 U042F to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U042F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.