P1401 DM-TL Pump Motor Current – Voltage too high – What the fuck does that mean?
The Accent has a “Diagnostic Module for Tank Leakage” near the driver side rear wheel. It looks like this:
The module itself is supposed to pressurize the system to detect leaks.
The Hyundai service bulletin recommends replacing the associated air filter and (maybe) the DM-TL unit for the above trouble code. Since I took the whole assembly down, I decided to move on to replacing both units. The DM-TL will run you about $220 and the air filter $13 at the dealership. (I had no luck finding the parts online)
The assembly is held onto the car by 3 nuts. The DM-TL is a fiesta of silicone hoses that are prone to break. Soapy water will help separate these hoses.
Disconnecting the unit is rather obvious so I won’t go into detail. As always, re-installing is the reverse process.
The 2003 Accent part numbers are:
- 31453-25510 – filter
- 31440-25510 – DM-TL
Here are some self explanatory images depicting the work: