What Does P2253 Mean?
The negative current control circuit for Bank 1 Sensor 1 oxygen sensor is reading higher than expected. This indicates a short to voltage, open circuit, or insufficient current flow in the wideband sensor's pumping cell.
Common Causes
40%
Failed wideband oxygen sensor with internal open or high resistance
25%
Negative current control wire shorted to voltage source
20%
High resistance in wiring or connector terminals
10%
ECM internal driver circuit failure providing excessive voltage
5%
Contaminated O2 sensor from oil or coolant consumption
Diagnostic Steps
1
Step 1: Disconnect Bank 1 Sensor 1 wideband O2 sensor and check for unexpected voltage on negative current control wire at harness connector
2
Step 2: Measure resistance of negative current control circuit from sensor connector to ECM (should be less than 5 ohms)
3
Step 3: Check for short to voltage by measuring between negative current control wire and 12V circuits with power off
4
Step 4: Inspect O2 sensor for contamination, carbon buildup, or physical damage that could affect internal resistance
5
Step 5: Replace O2 sensor if wiring and ECM voltage output test within specifications but code persists
Estimated Repair Cost
$200 - $650
Parts + labor, varies by vehicle and location
The negative current control circuit for Bank 1 Sensor 1 oxygen sensor is reading higher than expected. This indicates a short to voltage, open circuit, or insufficient current flow in the wideband sensor's pumping cell.
The most common cause of P2253 (O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 1) is: Failed wideband oxygen sensor with internal open or high resistance
Typical repair costs for P2253 range from $200 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short distances but air-fuel mixture control will be compromised affecting performance and emissions. Prolonged operation risks catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2253 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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