U0610 code meaning
Lost Communication With Mass or Volume Air Flow Sensor B
Network system Generic code U06xx codes Check engine light
What U0610 means
Air flow sensor B is the second meter on engines that measure each intake path separately, typically one per bank on V engines with two air boxes. In GM's documents 23OBDG07 and 24OBDG07, written for an engine with two throttle bodies, U060F stands for bank 1 and U0610 for bank 2: the code sets when the digital sensor itself reports a time overflow or a maximum-period violation for 1.5 s with battery voltage above 9 V, and the MIL follows on the second trip. Ford's 2024 gasoline summary is an exception, filing its digital air flow sensor B under U0612. P010A to P010E concern an analog sensor B, and P010F compares the two meters. Without sensor B the controller relies on sensor A and models for that bank.
U0610 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0610
- Check engine light after the second trip on GM
- Uneven running or slightly reduced power
Common causes of U0610
- Most likelySignal, supply or ground wire to air flow sensor B damaged
- PossibleAir flow sensor B electronics failed or contaminated
- PossibleMoisture or loose terminal at sensor B connector
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
MAF sensor bSensor wiring
What each part of U0610 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 10 | The exact fault in that area. |
What to do next
- Note U0610 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 U0610
What does U0610 mean?
U0610 means "Lost Communication With Mass or Volume Air Flow Sensor B". Air flow sensor B is the second meter on engines that measure each intake path separately, typically one per bank on V engines with two air boxes. It is a generic code, so it means the same on every make.
Is it safe to drive with U0610?
Drive gently and only to a workshop. With U0610 the car can go into limp mode (reduced power) to protect itself.
Will U0610 fail an emissions test?
Yes, it can. U0610 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 U0610 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0610 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.