Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 380 (ENGINE CONTROL SYSTEM - 3.5L - DTC P0010 TO DTC P0420)DTC P0112 OR P0113CIRCUIT/SYSTEM TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Testing
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Always perform the.
P0112
- Turn ON the ignition, with the engine OFF.
- Disconnect the mass air flow (MAF)/IAT sensor. Observe the intake air temperature (IAT) sensor with a scan tool for -36°C (-33°F).
- If more than -36°C (-33°F), test the signal circuit of the IAT sensor for a short to ground or a short to the IAT low reference circuit and repair as necessary. If all circuits test OK then replace the control module.
- If less than -36°C (-33°F), replace the MAF/IAT sensor.
- If IAT signal circuit tests OK, then replace the control module.
IMPORTANT:
The sensor may be damaged if the circuit is shorted to a voltage source.
DTC P0113
- Turn ON the ignition, with the engine OFF.
- Disconnect the IAT sensor.
- Measure for the proper range of 4.9-5.2 volts between the IAT sensor signal circuit and a good ground with a DMM.
- If the voltage is less than 4.9 volts, test the IAT sensor signal circuit for a high resistance or an open circuit.
- If the voltage is more than 5.2 volts, test the IAT sensor signal circuit for a short to voltage, or any 5-volt reference.
- If the IAT sensor signal circuit tests normal, and the voltage is still not within the proper range, then replace the control module.
- Turn OFF the ignition, and all electrical accessories. Allow sufficient time for all of the control modules to power down before taking a resistance measurement.
- Measure for less than 5 ohms of resistance between the IAT low reference circuit and a good ground.
- If the resistance is more than 5 ohms, test the low reference circuit for a high resistance, an open circuit, or a faulty control module.
- If all circuits test OK, then replace the IAT sensor.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.