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P1171 code and timing belt S70 1999

I just got my car back from the dealer. The obd-2.com software

was giving me a P1171 - mixture too lean - code after the

Check Engine light came on. The dealer said they were getting

code ECM 261A - Pressure intake system. They replaced the

MAF sensor.

The car has 67k miles on it and I had done all of the maintenance

items listed in the shop manual. The service manager suggested

flushing the brake fluid and replacing the fuel filter. He

was quite insistent, however, that I did not need to replace the

timing belt until we got to 105k miles ( this is a 1999 model).

Peter Schauss

1999 S70 GLT








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Re: P1171 code and timing belt S70 1999

The OBD2 codes you get and those used by Volvo aren't the same #s and may not render the same wording to the user. Volvos codes are more specific and Volvo only gives out the necessary OBD2 info required by federal law in the US, even though Volvos diagnostics (Vadis in your case) is more specific.

With a 261a code, I'd agree: MAF sensor and they've become problematic in recent years.

As for the T-belt, 105K is the recommended interval and only once, reported at this site have I heard of one breaking prematurely. It's your car so if you want, there's no good reason why any dealer wouldn't replace it sooner if you request it as a preventative measure and your piece of mind. The fuel filter isn't required until 100K and I've never seen one clog, even on very old, very high mileage 200/700s where some were neglected.

If you've had all your services done, your brake fluid should have been flushed at the 60K service, look in your owners manual for all services advised.







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