P0069 OBD Error Code: Problem & Solutions
OBD Code P0069 - Manifold Absolute Pressure - Barometric Pressure Correlation
Is
your Check Engine Light illuminated on the car’s dashboard? Are you
experiencing sudden drop in the fuel economy with stalling of the engine? Or is
there any smoke coming from the exhaust pipe? Then, there might be a
possibility of an issue with the MAP pressure of the car, thus indicating OBD
Code P0069 error.
Learn More About OBD Error Code P0069
OBD Code P0069
means that the Powertrain Control Module (PCM) is detecting contradictory
readings from the Manifold Absolute Pressure (MAP) Sensor and the Barometric
Pressure Sensor.
The Manifold
Absolute Pressure (MAP) Sensor tells the engine control module (PCM) how much
pressure is in the engine manifold. The Barometric Pressure Sensor (usually
built into the Mass Airflow Sensor) tells the PCM the amount of boost pressure
created by the turbocharger. The control module compares the two sensors to
determine if one of the sensors has lost its calibration. If the PCM determines
there is a calibration issue with one or both of the sensors, the PCM will set
code P0069.
What causes problem of Manifold Absolute Pressure-Barometric Pressure
Correlation?
- Faulty barometric
pressure sensor
- Fault in the
circuitry of MAP Sensor & Barometric Pressure Sensor
- Faulty Powertrain
Control Module
- Dirty air filter
- Mass Air Flow
Sensor failure
- Vacuum Leakages
- Wiring and
connection problems
Replace/Repair These Parts To Fix OBD Code P0069
- Powertrain Control Module - OBD Error Code
P0069 can also be due to faulty PCM. This may lead to engine stalling or not
starting, and check engine lights being on. It’s better to get the faulty
electricals replaced as soon as possible.
- Mass Air Flow Sensor - Wrong
information sent by the sensor will affect the engine performance adversely as
it will not be able to properly read the air entering the system thus hampering
the air to fuel ratios directly impacting the engine’s output. Thus, it is
advisable to replace them in time.
- Manifold Absolute Pressure Sensor - If you are
experiencing any problem with the pressure sensor, you should replace them
immediately. Shop from us now!
- Barometric Pressure Sensor - The BAP Sensor
is used to measure the atmospheric pressure of the environment the engine is
driving in. Thus, it plays a very important role in the engine’s performance.
Replace the faulty BAP sensor now!
- Air Filter - Dirty or clogged air filters will reduce the air intake capacity and thus hamper the combustion process of the engine. Clean or replace them immediately.
- Diagnostic Tools - Use
professional level tools to detect and correct the OBD code problems. Buy now!
Symptoms Of OBD Error Code P0069
Following
are the common symptoms indicating the OBD Code P0069 Error:
Common Symptoms
- Check
Engine Light illumination on dashboard
- Rough
Engine Idles
- Engine
surging and detonation
- Reduces Acceleration
- Loss
of Engine Power
How To Correct P0069 Manifold Absolute Pressure - Barometric Pressure Correlation
- Replacement of the Manifold Absolute
Pressure (MAP) Sensor
- Replacement of the Barometric
Pressure (BAP) Sensor
- Replacement of a clogged or damaged
Air Filter
- Replacement of the Powertrain
Control Module (PCM)
- Repairing or replacing wiring and connections that is related to the sensor and circuit of this system
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Easy Diagnosis Of Engine Error OBD Code P0069
A qualified
technician should be hired to attend to the OBD error code problem who can use
professional scan tools efficiently and can therefore diagnose the problem with
ease. Following are the steps:
- Use a scan tool
and put it in vehicle's OBD-II port to confirm presence of P0069 error code.
- Data is freeze
framed and vehicle speed, operating temperature, engine speed, and operating
time is checked for when the code was detected.
- A road test is
performed with a scan tool installed in the OBD-II port to confirm an issue is
present.
- Visually inspect
the wiring on both MAP sensor and MAF sensor for damaged/broken wiring, swapped
connectors, or wiring shorted to ground or power.
- Also check the
BAP sensor for any physical damage and repair immediately.
- Use a Multimeter
to check that no wiring the distorted or short.
- Check for the car’s ECU and replace if needed.
Common mistake when diagnosing the P0069 code
- Check of faulty wiring and connectors first. Avoid jumping straight to PCM for problems and it will give faulty test results. Follow the step by step diagnosis process at all times keeping in mind the specific make and model.
- Never directly
replace the MAP/MAF/BAR sensors without checking for all the problems and
components. This is simply rushing into things and costly repairs without doing
a full diagnosis.