Intake Manifold Pressure Sensor Circuit High Voltage
This code indicates high voltage in the intake manifold pressure sensor circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is seeing more than 5 volts coming from the intake manifold pressure sensor when it should be around 0.5 to 4.5 volts. This usually means there's a problem with the sensor or its wiring.
What the computer is actually seeing
The engine control module (ECM) monitors the intake manifold pressure sensor voltage. If it detects a voltage higher than 4.5 volts, it triggers this code.
What a healthy reading looks like
The expected voltage from the intake manifold pressure sensor should be between 0.5 to 4.5 volts under normal operating conditions.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connector for the intake manifold pressure sensor for damage or corrosion. Decision: If damaged, repair/replace. If okay, proceed.
- 22. Disconnect the intake manifold pressure sensor and use a multimeter to measure the voltage at the sensor connector with the key on, engine off. Expect 5 volts or less. Decision: If over 5 volts, check for short to power. If 5 volts or less, proceed.
- 33. Reconnect the sensor and measure the voltage output from the sensor while the engine is running. Expect a voltage reading between 0.5 to 4.5 volts. Decision: If reading exceeds this range, replace the sensor. If reading is within range, suspect potential ECM issue.
Common causes
- Wiring harness short to power
- Faulty intake manifold pressure sensor
- Poor ground connection
- Corroded connectors on the sensor
- ECM software issue
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive with this code due to potential engine performance issues.
Will this code come back after clearing?
It may come back if the underlying issue, like a faulty sensor or wiring problem, isn't fixed.
Why does this code pair with SPN 3760?
SPN 3760 is related to low voltage; both codes indicate issues with the intake manifold pressure sensor circuit.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →