OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P1129
Downstream Oxygen Sensors Swapped from Bank to Bank
Ford
Fuel and Air Metering
Medium severity
P1131
Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1
Ford
Fuel and Air Metering
Medium severity
P1136
Crankshaft Position Sensor And Or Camshaft Position Sensor Input Signal to PCM Concerns
Ford
Fuel and Air Metering
High severity
P1143
Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1
Ford
Fuel and Air Metering
Medium severity
P1146
Heated Oxygen Sensor 2 Minimum Voltage Monitoring Bank 1
Ford
Fuel and Air Metering
Medium severity
P1151
Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2
Ford
Fuel and Air Metering
Medium severity
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