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.

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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 35 (ENGINE PERFORMANCE SYSTEM SELF-DIAGNOSTICS)DIAGNOSTIC TESTSDTC P1107 OR DTC P1108

2004 Acura 3.5RL

DTC P1107 Or DTC P1108

2004 Acura 3.5RLSECTION DTC P1107 Or DTC P1108

WARNING: This page is about a different car, the 2003 Acura RSX. However, it is still accessible from the selected car via links, so may be relevant.

Code Definition

DTC P1107: Barometric Pressure Sensor Circuit Low Voltage
DTC P1108: Barometric Pressure Sensor Circuit High Voltage

Perform ECM/PCM reset procedure. See ECM/PCM RESET PROCEDURE/CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Turn ignition switch on. If DTCs P1107 or P1108 do not reset, problem is intermittent. System is functioning properly at this time. If DTCs reset, update ECM/PCM or substitute with known-good ECM/PCM. If symptom or indication goes away, replace original ECM/PCM.

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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.