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Daewoo Lanos Sport P0342 Check Engine Light: Diagnosis and Fix with Used PCM

Model: Daewoo Lanos Sport Fault Code: P0342 Posted: 2007-03-08 18:29

I own a 2001-2002 Daewoo Lanos Sport that started showing the check engine light about six months ago. The diagnostic code displayed is P0342, which indicates a camshaft position sensor issue. I initially took it to the dealership, where they replaced the camshaft position sensor and claimed the problem was resolved. However, the check engine light returned shortly after. Upon returning for further diagnosis, the technician advised that the issue wasn't with the sensor but rather with the Powertrain Control Module (PCM), which was faulty. They estimated a repair cost of $1,000 to replace the PCM. I then found a used PCM at a junkyard for $150 and installed it today. Despite this replacement, the P0342 code continues to appear. The check engine light comes on immediately after starting the vehicle and remains lit throughout driving. I've tried resetting the system by disconnecting the battery for 30 minutes, but the issue persists. I'm seeking advice on possible causes: Is it possible that a loose wire or damaged harness is causing intermittent signals? Could the used PCM be programmed correctly to match the original vehicle's settings? And how likely is it that a used PCM would display the exact same error code as the original? Additionally, I've read that timing belt slippage might trigger this code. While I believe the timing belt is toothed and unlikely to slip, I'm considering replacing it soon anyway. Are there any known technical service bulletins (TSBs) related to camshaft sensor issues on Daewoo Lanos models from 1998–2002? Any insights or troubleshooting steps would be greatly appreciated.

Related fault codes
P0342
Comments (5)
Anonymous 2007-03-08 22:33

When does the check engine light activate—immediately after starting, or during driving? This can help determine if it's a consistent issue. Has the dealer performed any diagnostic data logging? A loose wire or damaged insulation in the harness could cause intermittent signals. A short circuit might also be present. Note: Programming a new PCM is typically required and must be done by a dealership—DIY users generally cannot perform this step. Also, if the original PCM failed, it's possible that the replacement (even used) may not behave identically due to differences in firmware or calibration. However, if the issue stems from a common fault, the new unit might reproduce the same error code.

Anonymous 2007-03-08 23:01

The check engine light stays on continuously—within five seconds of turning the key and remains lit throughout all driving conditions. I've already tried disconnecting the battery for 30 minutes to reset the system, but the light returns immediately. How can I properly program a new PCM? Is this something a do-it-yourselfer can handle? Is it likely that a used PCM would display the exact same P0342 code as the original vehicle's PCM?

Anonymous 2007-03-08 23:20

I came across information suggesting that a slipped timing belt could trigger the P0342 error. Is this accurate? I plan to replace my timing belt this weekend—could this be related to the current issue?

Anonymous 2007-03-08 23:39

Question: How do I program a new PCM? Answer: This must be done by a certified dealership, not a DIYer. Question: Is it likely that a used PCM will show the same P0342 code as the original? Answer: If this is a common issue on Daewoo Lanos models (1998–2002), then yes—there's a good chance. However, PCMs typically don't fail frequently. If the crankshaft and camshaft positions are out of sync, it could trigger P0342. While timing belts have teeth and are designed to prevent slippage, this remains a point of debate. There are two known Technical Service Bulletins (TSBs) for Daewoo Lanos 1998–2002 regarding cam position sensor malfunctions: - TSB 04V357000 - TSB 04V394000 You can search these at: http://www-odi.nhtsa.dot.gov/cars/problems/tesbsearch.cfm I recommend verifying if your vehicle model year matches the recall scope and checking sensor signal integrity with a multimeter, as well as testing harness resistance from sensor to PCM. Note: These TSBs may apply—your vehicle's exact year should be confirmed for accuracy.

Anonymous 2007-05-01 20:44

P0342 on the Daewoo Lanos Sport specifically refers to a camshaft position sensor fault. Many vehicles of this era had recalls related to this component. Visit the official Daewoo USA website (http://www.daewoous.com/Default.aspx), navigate to 'Owners', and register your vehicle using the VIN. This will show whether you have any active recalls for your specific model year and if they've been serviced. Finding a certified Daewoo repair shop may be challenging, but the site provides a directory. My own Lanos had this recall and required service at a location about 90 minutes away—however, it was covered free of charge under the recall program. I strongly recommend checking for recalls first before investing in further repairs or replacements.