P0453 Fuel Tank Pressure Sensor Circuit High

Code: P0453
Applies To: Most makes, generic code
Loose Cap Can Set It: Not named in our sources
Typical Fix: $356 to $457 at RepairPal

The tank pressure sensor signal is higher than it should ever be.
A shop confirms it with the carmaker's EVAP test and a smoke machine before replacing parts.
Usually yes for now, but get it fixed soon and check for open recalls.

What The Carmakers Call It

Fuel Tank Pressure Sensor Circuit High, as printed by Ford Motor Company
Tank Ventilation Pressure Sensor signal too high, as printed by Audi of America

Causes Named In Carmaker Bulletins

Our sources name the part this code points to but no single cause. Start with the Fuel Tank Pressure Sensor guide.

No source ties this to the gas cap.

What The Fix Costs

The usual part for this code is the fuel tank pressure sensor. Published estimates put it at $356 to $457 at RepairPal. The full table with every source and date is on the cost page. A diagnosis first keeps you from paying for a part you did not need, which is why we price what a check engine diagnostic costs before the fix.

Getting The Light To Go Off

After the repair the light goes off once the EVAP test runs and passes on three drive cycles in a row, and the code is erased after 40 warm up cycles, per CARB. The test only runs under set conditions such as a fuel level between about 15 and 85 percent, so it can take days.

P0450Tank Ventilation Pressure Sensor P0451Fuel Tank Pressure Sensor Range/performance (offset)P0452Fuel Tank Pressure Sensor Circuit Low P0454Fuel Tank Pressure Sensor Intermittent/erratic (noisy)