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P00B5 OBD Error Code: Problem & Solutions

OBD Code P00B5 - Radiator Coolant Temperature Sensor Circuit Intermittent/Erratic

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When a P00B5 trouble code sets it means that the powertrain control module has detected a fault, specifically to the Coolant Temperature Sensor (CTS) and the turbochargers.

 

If you notice a lean or risk condition in the engine, decreased fuel efficiency, black smoke from the exhaust, and/or illuminated Check Engine Light on the dashboard, them there is a major possibility that you are dealing with the OBD Code P00B5 with your vehicle.

Learn More About OBD Code P00B5 Error

The Engine Control Module (ECM) uses the CTS' values to monitor the engine's temperature and in turn, can regulate it accurately. Different temperatures require different air/fuel mixtures so it is imperative that the CTS is functioning within desired ranges. Most times, CTS' are Negative Temperature Coefficient sensors, which means, the resistance within the sensor itself decreases as the temperature rises. Understanding this will help you greatly when troubleshooting.

 

P00B5 Radiator Coolant Temperature Sensor Circuit Intermittent code is set when the ECM monitors an intermittent (comes and goes) malfunction within the CTS or its circuit.

 

What causes the problem with the Radiator Coolant Temperature Sensor Circuit?

 

  • Faulty/Damaged Coolant Temperature Sensor
  • Dirty or blocked Coolant Temperature Sensor
  • Faulty radiator
  • Seal around Coolant Temperature Sensor broken/damaged
  • Damaged wiring/connections in the CTS circuit
  • Faulty PCM (Powertrain Control Module)
  • Bad fuse in the CTS (Coolant Temperature Sensor) circuit

Replace/Repair These Parts To Fix OBD Code P00B5

  1. Turbocharger - If the turbocharger is performing consistently, then replace your old turbochargers with us!
  2. Supercharger - Supercharger is important as it increases the air pressure or density of air supplied to an internal combustion engine. Replace damaged supercharger and parts today for increased performance.
  3. Turbo Boost Sensor - Boost pressure sensors can be responsible for wrong readings thus posing the error. Thus, replace old sensor today!
  4. Boost Pressure Gauge - It is important to check the physical readings of the gauge in relation to the sensor picking the readings. Replace the gauge, if found faulty.
  5. Intake Manifolds - Old/damaged air intake manifolds can affect the air intake and impact the engine’s performance. Replace damaged intake manifolds from us!
  6. Engine Control Module - OBD Error Code P00B5 can also be due to faulty ECMs. 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.
  7. Powertrain Control Module - P00B5 error code also relates to problems with the powertrain. Find all the Powertrain related parts with us.
  8. Auto Switches & Sensors - Common causes behind that P00B5 error code can be defective switches or faulty sensors. So it will be a good decision to replace them now.
  9. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.

Symptoms Of OBD Error Code P00B5

This code would be considered a moderately severe issue and will vary according to symptoms and how the fault is affecting your vehicle’s performance. Neglect this problem long enough, and you could face some hefty engine repair bills.

 

Common Symptoms

 

  • Erratic idle and hard cold start
  • Engine stalling and not starting
  • Decreased fuel economy
  • Exhaust emitting smoke
  • Fuel leakage smell
  • Wrong temperature readings
  • Decreased engine performance and acceleration

How To Correct P00B5 Radiator Coolant Temperature Sensor Circuit Intermittent/Erratic

Key components that can be replaced if found problematic to solve the OBD Code P00B5 error are as follows:

 

  • CTS (Coolant Temperature Sensor)
  • Radiator
  • Seal for the CTS (Coolant Temperature Sensor)
  • Wiring/connections in the CTS (Coolant Temperature Sensor) circuit
  • ECM/ PCM (Powertrain Control Module)
  • Fuses in the CTS (Coolant Temperature Sensor) circuit


Easy Diagnosis Of Engine Error OBD Code P00B5

Take the help of a qualified mechanic to diagnose the OBD error code problem. Some of the tools and equipment required for easy diagnosis of error P00B5 are mentioned below;

  • OBD code reader
  • Antifreeze/Coolant
  • Drain pan
  • Multimeter
  • Basic socket set
  • Basic ratchet and wrench sets
  • Basic screwdriver set
  • Battery terminal cleaner
  • Service manual

Common Mistakes When Diagnosing OBD Code P00B5

 

Replacing the CTS without performing and diagnostics at all is one of the manor issues. This happens as a lot of times, the sensor itself has failed, as it undergoes a lot of stress and is a high failure item so it can be easy to get lazy and just replace the sensor.

Measuring the wrong terminals in the connectors is also a major mistake.

Always checks for wiring and harness issues related to the sensors and connectors.

Other Diagnostic Codes Related To OBD Code P00B5

P00B1 - Radiator Coolant Temperature Sensor Circuit

P00B2 - Radiator Coolant Temperature Sensor Circuit Range/Performance

P00B3 - Radiator Coolant Temperature Sensor Circuit Low

P00B4 - Radiator Coolant Temperature Sensor Circuit High

   P00B6 - Radiator Coolant Temperature/Engine Coolant Temperature Correlation