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.
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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 8 (ENGINE CONTROLS AND FUEL - 2.2L (L61) - DTC P0016 TO DTC P0420)DTC P0315CIRCUIT/SYSTEM TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Circuit/System Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
The CKP system variation learn procedure may have to be repeated up to 5 times before the procedure is learned.
Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn . The scan tool should display Learned this Ignition.
- If the CKP system variation learn procedure cannot be performed successfully, inspect for the following conditions:
- Any worn crankshaft main bearings
- A damaged or misaligned reluctor wheel
- Excessive crankshaft runout
- A damaged crankshaft-Refer to Crankshaft and Bearing Cleaning and Inspection .
- Interference in the signal circuit of the CKP sensor
- The ignition switch is in the ON position until there is insufficient system voltage.
- An ECM power disconnect with the ignition ON that may have erased the stored value and set DTC P0315
- Any debris between the CKP sensor and the reluctor wheel
RENDER: 1.0x
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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.