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
P1107
Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
Chevrolet
Fuel and Air Metering
High severity
P1111
Intake Air Temperature Sensor Circuit Intermittent High Voltage
Chevrolet
Fuel and Air Metering
High severity
P1114
Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage
Chevrolet
Fuel and Air Metering
High severity
P1116
Engine Coolant Temperature Sensor Signal Unstable Or Intermittent
Chevrolet
Fuel and Air Metering
High severity
P1121
Throttle Position Sensor Circuit Intermittent High Voltage
Chevrolet
Fuel and Air Metering
High severity
P1127
Exhaust Not Warm Enough Downstream O2 Sensor Not Tested
Chevrolet
Auxiliary Emissions Control
High severity
P1137
HO2S Bank 1 Sensor 2 Lean System or Low Voltage
Chevrolet
Fuel and Air Metering
Medium severity
P1151
Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2
Chevrolet
Fuel and Air Metering
Medium severity
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