Fuel Injection Timing Not at Top Dead Center (Volkswagen)
What does P1179 mean?
The P1179 code means the vehicle's onboard diagnostic system has detected: Fuel Injection Timing Not at Top Dead Center (Volkswagen). This is a critical severity code.
Common Symptoms
- Check Engine Light on
- Engine running very rough
- Severe loss of power
- Hard starting or no start
- Excessive exhaust smoke
Probable Causes (Ranked by Likelihood)
- Stretched or jumped timing chain Very High
- Worn timing chain tensioner High
- Camshaft position sensor failure giving false readings Moderate
- Crankshaft position sensor misalignment Moderate
- Damaged timing gears or guides Low
Step-by-Step Diagnostic Procedure
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Read camshaft and crankshaft position sensor data to check timing correlation
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Inspect the timing chain tensioner for wear or failure
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Perform a timing chain stretch test using the scan tool
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Remove the timing cover and visually inspect chain, guides, and tensioner
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Check for bent valves if timing has jumped significantly
Frequently Asked Questions
Is P1179 a serious code?
Yes, P1179 is a critical code. Incorrect fuel injection timing indicates the timing chain may have slipped or stretched, which can cause engine damage including bent valves. Do not continue driving.
Are VW 2.0T engines prone to timing chain issues?
The early TSI 2.0T engines (2008-2013) with the chain-driven design at the rear of the engine were known for timing chain stretch issues. Later revisions improved the design, but it remains a common repair for affected years.
How much does a timing chain replacement cost on a VW?
Timing chain replacement on VW 2.0T engines typically costs $1,000 to $2,500 including parts and labor. The chain, tensioner, guides, and associated gaskets are usually replaced together.