Which cars report code C003A?

Code C003A is named in 6 US owner complaints. Models: 5, model years 2012–2020. Mercedes-Benz Sprinter 3500, Dodge Charger, Freightliner Sprinter 3500, Honda Accord, Honda Insight.

C003A code: Right Rear Wheel Speed Sensor

Q: What does code C003A mean?

Right Rear Wheel Speed Sensor. How to read C003A: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 03A identify the specific fault.

Code C003A is named in 6 US owner complaints. Models: 5, model years 2012–2020.

What the code means

Right Rear Wheel Speed Sensor. Generic meaning per SAE J2012 (the same for all makes).

How to read C003A: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 03A identify the specific fault.

ABS/ESC codes: wheel speed sensors, the ABS hydraulic unit and pump, brake booster, pressure and yaw sensors. A hit to a wheel or suspension often damages the wheel speed sensor or its wiring, so on a damaged car this code is a reason to inspect the hub, knuckle and control arms, not just swap the sensor.

Key figures

Complaints with this code: 6
Models: 5
Model years: 2012–2020

Which models and years

Models whose owners name this code (5). Years link to the model year problems page.

Model	Years	Complaints
Mercedes-Benz Sprinter 3500	2012, 2016	2
Dodge Charger	2012	1
Freightliner Sprinter 3500	2012	1
Honda Accord	2018	1
Honda Insight	2020	1

Components named together with the code

Component as the owner filed it (one complaint can list several).

Electrical system 3
Powertrain 3
Service brakes 2
Electronic stability control 1
Engine 1
Forward collision avoidance 1
Vehicle speed control 1

Complaints by model year

2012 3
2016 1
2018 1
2020 1

What to do if an auction car has this code

Inspect the wheel and suspension on the impact side: the wheel speed sensor is often damaged together with the hub or knuckle.
Check whether the ABS and ESC lights stay on after start-up.
After replacing sensors or the hydraulic unit, bleeding and scan tool adaptation may be required.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

Initially I replaced the battery with no resolution of the issue. I later discovered maintenance code displayed by the vehicle was C003A-62 for Right Rear Wheel Speed Sensor Circuit Failur
Honda Accord 2018 · 2026-06
Same dash lights came on. Odbii code was C003A ('right rear wheel sensor'). I was able to nurse the unit home, but it did have the same problem after left turns a couple of times.
Mercedes-Benz Sprinter 3500 2016 · 2018-09
-7/5 - ~4:00pm - car fixed. Indicated "abs module dtcs C0037-62.C003A-62 and C121C-00. Found engine wrre harness connector c102 loose. Reinstalled connector c102. Cleared all codes. Performed extended road test. Verify okay." -7/6 ~12pm - received recall notice in mail. Safety recall m10/nhtsa 12v-197 abs/esc wiring.
Dodge Charger 2012 · 2012-07

Related codes

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.