P216B - OBD Trouble Code

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Is the car engine not performing at par with the expectations? Do you notice affected fuel economy, delayed throttle response and Check Engine Light illuminated on the dashboard? This can be an indication of the problem with the fuel delivery system of the vehicle, resulting in OBD code P216B getting stored in the Powertrain Control Module (PCM).

OBD code P216B gets set when the PCM detects that the fuel injector Group E circuit is low.

This basically means that the injector is at its maximum limit to adapt to the changes in the fuel demand by the PCM and has exhausted its limit to adapt further. It is important to note that the injector is designed to adapt to the engine’s varying fuel needs based on the external factors faced by the vehicle. It can be weather change, terrain change, temperature difference, etc.

Thus, when the ECM notes that the fuel injectors learning values are beyond the normal operating parameters, it sets the above stated OBD code.

What causes this problem with the Fuel Injector Group E Circuit Low?

• Vacuum leakage
• Clogged air filter
• Cracked/damaged intake tube
• Defective Head gasket
• ECM/PCM failure
• Group E fuel injector failure
• Worn/cracked piston rings
• Damaged intake manifold
• Leaky intake, PCV, EGR gaskets

1. Fuel Injector - Faulty fuel injector, it will cause rough idles and difficulty in starting. Also, it will affect the fuel economy and engine performance. Fuel injector can also crack or break leading to leakages and should be replaced immediately.
2. Fuel Sender Connector - Faulty connectors will cause imperfect fuel delivery will can cause lean or rich engine condition. This will hamper the power output and exhaust system also. Thus, replace it now!
3. Engine Control Module - ECM faults are rare but can be a big problem as faulty ECM will cause wrong vehicle operations and can also result in wrong OBD codes getting stored in the system which can also cause misdiagnosis. Thus, replace faulty ECM components now!
4. Powertrain Control Module - Check for PCM error which might be due to circuit faults that might require complete replacement and reprogramming. Replace it now!
5. Oxygen Sensor - The O2 sensor can also be at fault leading to lean or rich engine conditions and thus affecting the engine performance and improper fuel consumption. Buy new sensor and replace the faulty one now!
6. Diagnostic Tools - Buy quality diagnostic tools to check and diagnose OBD code P216B error with the help of experienced mechanic. Visit us today!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P216B here:

Common Symptoms

• Reduced fuel economy
• Engine misfiring
• Degrading engine performance
• Fuel smell from under the hood
• CEL (Check Engine Light) illuminated
• Engine performing abnormally
• Excessive exhaust smoke on load
• Reduced throttle response and acceleration

Want to correct the Trouble Code P216B? Read these points mentioned below:

• Fuel Injector replacement
• Fuel relay replacement
• Wiring and connector replacement
• PCM error correction

It is important to check all the components and repair/replace them, if necessary. You can find catalytic converters, temperature sensors, exhaust manifolds, battery connectors, MAF sensors, fuel pumps and parts and a lot more to solve any car part requirement. Buy now! 

Here are some steps which you should follow in order to diagnose this P216B fault code:

• Check for MAP and MAF related code error that might also get stored in the PCM along with this code, which can solve the problem easily.
• Inspect the fuel injection area for any corrosion or leakages on the exterior and if found, suspect it to be failed.
• One will require tools like a diagnostic scanner, digital volt/ohmmeter, and auto motive stethoscope.
• Connect the OBD scanner and retrieve all the coded and freeze frame the data. After doing that test run the vehicle again under same circumstances to see if the code returns to make sure which codes are persistent (in case of more than one code).
• When the vehicle is on, do a sound test to hear the fuel injector working. If there is no continuous clicking sound, suspect for failed of clogged injector.
• Use the DVOM to test for voltage and a ground pulse, when the engine is running. Most manufacturers utilize a system of constant battery voltage on one terminal of the fuel injector and a ground pulse (from the PCM) applied to the other terminal at the appropriate time.
• If no voltage is discovered at the connector of the fuel injector in question, use the DVOM to test system fuses and relays. Replace fuses and/or relays as needed.
• If everything seems to work fine, then check for faulty PCM and replace or reprogram as required.

Common Mistakes When Diagnosing The P216B Code

It is important to understand that there can be many other factors causing this problem rather than directly blaming the injection system completely. Always check for faulty wirings, and fuses as well as MAP/MAF sensor and O2 sensors for error too. Take help of professional mechanic to solve OBD code problem as this will ensure avoidance of misdiagnosis and can also help to reduce the costs associated with the repairs.

• Fuel injector failure
• Powertrain Control Module (PCM) failure
• Wiring and connector issues in relation to the sensor and circuits
• Damaged or clogged fuel filter