DTC P0069: Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem (2016-18)

General Description

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

The barometric pressure (BARO) sensor is built into the powertrain control module (PCM) and monitors atmospheric pressure. When the throttle valve is wide open, the manifold absolute pressure (MAP) sensor output is nearly equal to the BARO sensor output. If the throttle position is beyond a value stored in the PCM that is used to detect "wide-open throttle", and if the difference between the MAP sensor output and the BARO sensor output is equal to or greater than a set value, the PCM detects a malfunction in the BARO sensor output and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

Execution	Once per driving cycle
Sequence	None
Duration	2.5 seconds or more
DTC Type	Two drive cycles, MIL on

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions

Condition		Minimum	Maximum
Elapsed time after cylinder mode change		3.0 seconds	-
Throttle position*	1, 000 rpm	15.7 °	-
Throttle position*	3, 000 rpm	31.0 °	-
Throttle position**	1, 000 rpm	9.7 °	-
Throttle position**	3, 000 rpm	20.7 °	-
No active DTCs set (prevents monitor from running)*¹		P0107, P0108, P0117, P0118, P0122, P0123, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0222, P0223, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0351, P0352, P0353, P0354, P0355, P0356, P0401, P0404, P0506, P0507, P060A, P0722, P1109, P1659, P2073, P2074, P2101, P2118, P2135, P2176, P2228, P2229, P2279, P2413, P2646, P2647, P2648, P2649, P2652, P2654, P2656, P2657, P2658, P2659
No active DTCs set (prevents monitor from running)*²		P0107, P0108, P0117, P0118, P0122, P0123, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0222, P0223, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0351, P0352, P0353, P0354, P0355, P0356, P0401, P0404, P0506, P0507, P060A, P0722, P1659, P2073, P2074, P2101, P2118, P2135, P2176, P2227, P2228, P2229, P2279, P2413, P2646, P2647, P2648, P2649, P2652, P2654, P2656, P2657, P2658, P2659

*1: 2016 model*2: 2017 model on and after*: 6 cylinder mode (no cylinders are paused)**: 3 cylinder mode (3 cylinders are paused)

Malfunction Threshold

The difference between the BARO sensor output and the MAP sensor output is 26 kPa (7.5 inHg, 190 mmHg) or more for at least 2.5 seconds.

Possible Cause

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

BARO sensor failure
Air cleaner element clogged

Confirmation Procedure

With the HDS

None.

With the Driving Pattern

1.
Start the engine. Hold the engine speed [ENGINE SPEED] at 3, 000 rpm without load (in P or N) until the radiator fan comes on.
2.
Drive the vehicle under Enable Conditions (see "Throttle position") for at least 2.5 seconds.

Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

[ ]: HDS Parameter

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.

Conditions for clearing the DTC

The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.