Error Code P1080 is defined as Manifold Absolute Pressure/Barometric Pressure Circuit High Input. This code usually means there’s a broken link between the stepper motor and the manifold flap on one of your intake manifolds.

Unlike most codes, though generic this error code does NOT apply to all vehicles. Vehicle manufacturers use specific code and named for Error Code 1080, and their nature can be different from each other. Also, foreign vehicles may also use different DTC codes from the generic Engine Diagnostics code.

Definition

The engine system, along with the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes), activates this code solenoid valve to control the oil pressure to the engine mechanism installed through valve system to switch valve timing between Low and High. If the engine solenoid has an open or short circuit, the Error Code P1080 is set.

Common Symptoms

The most common symptom for this error code is the activation of Check Engine light on the dashboard.

Possible Causes

There are many reasons for this error code to take place. Some of the common possible causes include:

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  • Defective fan clutches which leads to overheating
  • Bad clutch fluid

How to Check

To diagnose for this error code, technicians usually check the fan clutches.

Then, they check the shear characteristics of the clutch fluid, as it may have deteriorated over time.

How to Fix

Repairs for this error code are simple, but of course, can only be derived from a proper diagnosis. Some of the common repairs are:

  • Repair or replacement of fan clutches
  • Replacement of clutch fluids

Note that other vehicle conditions may have different specific definition for this code, which means they may also have different diagnosis and of course, repair suggestions.

Note that if the Error Code P01080 is not resolved after the process above, and there are other trouble codes present in your computer, your vehicle will never pass an OBD-II emission test. There should be no codes present and the Check Engine light must be turned off for the vehicle to pass the OBD-II emission test. Also, all OBD-II self-monitors that check for faults must complete their test without finding problems for the vehicle to pass the test.

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