OBD-II Code P2252 is defined as an O2 Sensor Negative Current Control Circuit Low. This code indicates a problem with the oxygen sensor’s ability to send accurate readings to the Powertrain Control Module (PCM), which is essential for maintaining optimal fuel economy and engine performance.
What Does the P2252 Code Mean?
The P2252 code signals that the PCM has detected a low voltage in the negative current control circuit of the O2 sensor. This can lead to improper readings of exhaust gases, affecting the engine’s performance and fuel efficiency.
What Causes the P2252 Code?
Several factors can trigger the P2252 code, including:
- Exhaust leaks that disrupt the sensor’s readings
- Oxygen sensor failure, either due to age or damage
- Powertrain Control Module (PCM) failure
- Wiring issues, such as shorts or breaks in the circuit
What Are the Symptoms of the P2252 Code?
Symptoms associated with the P2252 code may include:
- Decreased engine performance
- Increased fuel consumption
How Serious Is the P2252 Code?
The P2252 code is classified as moderate severity. While it may not pose an immediate threat to the vehicle’s safety or functionality, ignoring it can lead to more significant problems over time. It is advisable to address it within a reasonable time frame to maintain vehicle performance.
How to Diagnose the P2252 Code
Diagnosing the P2252 code involves:
- Using an OBD-II scanner to confirm the code
- Inspecting the oxygen sensor and its wiring for damage
- Checking for exhaust leaks
- Testing the PCM for proper function
Common Repairs for the P2252 Code
Common repairs that may be needed to resolve the P2252 code include:
- Oxygen sensor replacement
- Repairing or replacing damaged wiring
- Fixing any exhaust leaks
- Replacing a faulty PCM if necessary
How Much Does It Cost to Fix the P2252 Code?
The cost to fix the P2252 code can vary widely depending on the specific issue. On average, replacing an oxygen sensor can range from $100 to $300, while more extensive repairs, such as PCM replacement, can exceed $1,000.
Can I Fix the P2252 Code Myself?
While some DIY mechanics may be able to replace an oxygen sensor or repair simple wiring issues, diagnosing the underlying cause of the P2252 code may require specialized tools and expertise. It is recommended to seek assistance from a qualified mechanic to ensure proper diagnosis and repairs.
