P2228 Code 6.7 Cummins

Diagnostic problem P2228 code 6.7 Cummins flashing can be a challenging experience. However, with the proper guidance and resources, it is possible to determine the cause of these codes and find ways to fix them. One such code that may appear is P2228, indicating Barometric Pressure Sensor ‘A’ Circuit Low. The Engine Control Module (ECM) detected a lower-than-usual electrical value in the circuit or BAP sensor.

Understanding what this code means and how to repair it properly requires some knowledge of car mechanics, so it’s important to consult reliable sources for help if you’re unsure how to move forward. Thankfully, many online tutorials now explain exactly what steps must be taken to address P2228 and the associated costs of doing so correctly.

What Does P2228 Code  6.7 Cummins Mean?

What Does P2228 Code  6.7 Cummins Mean

The ECM is responsible for analyzing the data gathered from various sensors to determine the optimal air-fuel mixture for the engine. The Barometric Air Pressure (BAP) sensor measures atmospheric pressure to compare it with intake manifold pressures. An electrical value lower than desired will trigger a P2228 code 6.7 Cummins set by the ECM. This code can be used to identify if there is an issue present within any particular circuit in the BAP, even if more than one sensor is involved.

Breaking down the P2228 code 6.7 Cummins to gain a better understanding is beneficial.

  • P= OBD-II Diagnostic Powertrain
  • 2= Fuel and Air Metering for Injector Circuit Malfunctions
  • 2= Barometric Pressure Circuit High Input
  • 28= Individual fault index. For this specific code means Barometric Pressure Sensor ‘A’ Circuit low.

How Serious Is P2228 Code  6.7 Cummins?

The Electronic Control Module (ECM) and the Powertrain Control Module (PCM) are dedicated to thoroughly monitoring every sensor. When the Ignition is turned ON, if any discrepancy arises between Barometric Pressure and Manifold Absolute Pressure or Throttle Intake Pressure, it will be picked up by the ECM as a failed test. This situation can lead to extreme conditions in the control circuit, consequently setting off code P2228 DTC.

As far as the severity of code P2228 is concerned, it falls between average to high depending upon how long its running time has been active. If you have a 6.7 Cummins engine installed in your vehicle, then it is advised that immediate steps should be taken to resolve this issue. Otherwise, air/fuel ratios might be affected adversely, leading to power loss while driving and expensive engine damage if not adequately diagnosed on time.

What Causes P2228 Code  6.7 Cummins?

The primary cause of the code is typically related to a defective BAP sensor. Additionally, other contributing factors may be causing the issue.

  • Faulty electrical connector
  • Open, short, or corroded wiring in the circuit
  • Loose electrical connection to the circuit
  • Internal or mechanical electrical short
  • Altered BAP readings causing mechanical malfunction
  • Damaged or faulty ECM
  • Clogged catalytic converters
  • The broken throttle position sensor

Other Symptoms Of Getting Code P2228 On 6.7L Cummins

When diagnosing a P2228 code 6.7 Cummins, the engine may display signs that alert mechanics of potential issues. In addition to the routine check engine light indicator, other symptoms may be present and indicate a possible P2228. These symptoms are similar to those experienced by people who have contracted an illness, allowing for an accurate diagnosis of the problem.

  • Low power of the engine
  • Malfunctioning of the throttle or not functioning at all
  • Low fuel efficiency
  • Low performance of the engine
  • Irregular, unusual engine noises
  • There would be possibly much odor from the gasoline
  • Misfiring engine or halting

How To Fix The P2228 Code 6.7 Cummins?

How To Fix The P2228 Code 6.7 Cummins

Diagnosing the problem before fixing it is necessary, given that the symptoms of code P2228 on a 6.7 Cummins have been identified.


  • Inspect the wiring and connectors for any damage.
  • Analyze the ECM to identify any codes and validate if there is a failure in the freeze frame data.
  • Diagnose the mass airflow sensor and throttle position sensor accordingly.
  • Determine if the adequate voltage is exhibited on the BAP and its circuit.
  • Confirm whether or not restrictions are present in the catalytic converters.
  • Ascertain whether or not possible harm has been inflicted upon the ECM for clarification purposes.

Once the diagnosis has been completed, progress can be made toward finding solutions.

Step 1: Repair BAP Sensor and Relocate Position

The BAP sensor should be located correctly to guarantee optimal performance; if it has been moved away from its initial location, it must be adequately replaced. In addition, the wiring should be checked for any signs of damage and addressed as necessary with either repairs or replacements. It is also essential to ensure the sensor’s vicinity is cleared of any debris that may have gathered around it.

Step 2: Properly Place the Connector and Repair (if necessary)

Ensuring an electrical connection is secure and reliable requires the connector to be in the correct position. If it is not, then it should be adjusted accordingly. Additionally, any physical damage should be identified and remedied promptly through repair or replacement of the connectors as necessary for optimal performance.

Step 3: Find Sensor Obstructions and Fix Them

Atmospheric pressure readings may be incorrect, which could be due to an obstruction in the sensor; if so, it is necessary to identify the cause and recalculate the lessons.

Step 4: BAP Voltage Testing and Replacement

Using a multimeter, it is possible to check the voltage of the BAP sensor. Unusual readings may indicate that the sensor is faulty and requires replacement. Therefore, if an exceptional voltage is displayed, a new BAP sensor should be obtained and installed to restore standard functionality.

How Much Does It Cost To Fix 6.7L Cummins P2228 Code?

An expert mechanic can diagnose and repair the P2228 DTC in approximately one hour. The cost of such diagnosis and repair typically ranges from $75 to $150, depending on the location, vehicle model, and engine type. If deeper issues are found with the sensor itself, it would need to be replaced at a cost ranging from $65 to $200 for a Cummins engine. In more severe cases where an ECM is disoriented or defective, replacing it can cost around $800.

Can You Drive Your 6.7L Cummins With Code P2228?

The code’s severity is moderate, and thus not tending to it could cause permanent harm to the engine regardless of its efficiency.

Furthermore, as the symptoms indicate, prolonged code flashing can lead to loss of power or even misfiring in some cases.

Additionally, one may face difficulty driving if immediate action is not taken. As such, prompt attention should be paid once the code has been identified, whether by way of fixing it or taking it to a reliable automobile shop that will restore your vehicle shortly after.

Final Words

As an automobile enthusiast, taking the necessary precautions to ensure that the engine’s life isn’t put at risk due to the potential costs and difficulties of fixing any complications is essential. The P2228 code 6.7 Cummins should not be ignored as it can be severe; therefore, determining its cause should be done as soon as possible.

If you cannot do this independently, seeking a technician is recommended to avoid experimentation. It would also be beneficial to scan their engine control module (ECM) for codes and freeze frame data during the diagnosis of any issues to understand them better.

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