What does p2251 mean on an O2 sensor?
Although generic, the exact repair steps may vary depending on year, make, model and powertrain. A stored code P2251 means that the powertrain control module (PCM) has detected a negative current discrepancy in the upstream oxygen (O2) sensor for engine bank number one. Bank one is the engine bank that contains the number one cylinder.
What are the symptoms of the p2251 trouble code?
The O2 sensor for bank 1 sensor 1 has an open circuit in the heater circuit. What are the symptoms of the P2251 code? The Check Engine Light will be illuminated and the code is set in ECM memory as a fault. The ECM may lose control of the fuel control circuit for the O2 sensor for bank 1 sensor 1.
What is the p0151 code for bank 2?
The code P0151 is similar to P0136, P0137, and P0131. This code warns about a fault with the upstream oxygen sensor on Bank 2. Bank 2 Sensor 1 is tucked in front of the catalytic converter. It analyzes the amount of oxygen in the exhaust before it enters the catalytic converter.
What does a stored code p2251 in PCM mean?
A stored code P2251 means that the powertrain control module (PCM) has detected a negative current discrepancy in the upstream oxygen (O2) sensor for engine bank number one. Bank one is the engine bank that contains the number one cylinder. Sensor 1 denotes the upstream (pre-cat) sensor. The negative current control circuit is a ground circuit.
What does the p2251 code on the O2 sensor mean?
What the P2251 code means. P2251 is an OBD-II generic code. The engine control module (ECM) monitors the negative current control of the O2 sensor heater circuit.
A stored code P2251 means that the powertrain control module (PCM) has detected a negative current discrepancy in the upstream oxygen (O2) sensor for engine bank number one. Bank one is the engine bank that contains the number one cylinder. Sensor 1 denotes the upstream (pre-cat) sensor. The negative current control circuit is a ground circuit.
How much does it cost to repair a p2251 sensor?
Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost of diagnosing the P2251 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
What is the diagnostic code for O2 sensor negative current?
P2251 is a diagnostic trouble code (DTC) for “O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.