Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1454: Fuel Tank Pressure Sensor Range/Performance Problem
2004 Acura 3.5RLSECTION DTC P1454: Fuel Tank Pressure Sensor Range/Performance Problem
WARNING: This page is about a different car, the 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When substituting or replacement of PCM is recommended, see PCM REMOVAL & REPLACEMENT
for important precautions.
- Turn ignition on. Using Honda PGM Tester or the HDS, do the DTC CLEAR in the CLEAR menu.
- Turn ignition off. Remove fuel fill cap and wait 1 minute. Using Honda PGM Tester or the HDS, check the FTP SENSOR in the DATA list. If there is between 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, problem is intermittent, system is OK at this time. Check for poor connections or loose terminals at the FTP sensor and PCM. If there is more or less than 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, go to next step.
- Remove FTP sensor with its connector connected. See "A" in Fig 1 . Using Honda PGM Tester or the HDS, check the FTP SENSOR in the DATA list. If there is between 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, check for debris or clogging in the EVAP canister and FTP sensor. Go to next step. If there is more or less than 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, check for debris or clogging in the FTP sensor air tube. If air tube is OK, replace FTP sensor. Go to next step.
- Install FTP sensor to the EVAP canister. Turn ignition on. With the Honda PGM tester or the HDS, do PCM RESET in the CLEAR menu. Do the PCM idle learn procedure. See PCM IDLE LEARN PROCEDURE . Go to next step.
- Check for Temporary DTCs or DTCs in the DTC menu. If DTC P1454 is set, check for poor connections or loose terminals at FTP sensor and PCM harness connectors. Go to step 1 . If any other Temporary DTCs or DTCs are set, troubleshoot those indicated. If Temporary DTCs or DTCs are not set, go to next step.
- Turn ignition off. Remove fuel fill cap and wait 1 minute. Using Honda PGM Tester or the HDS, check the FTP SENSOR in the DATA list. If there is between 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, troubleshooting is done. If there is more or less than 0.67 kPa (0.2 in.Hg) or 2.3-2.7 volts, check for poor connections or loose terminals at the FTP sensor and PCM. Go to step 1 .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.