P0376 Code - Timing Reference High Resolution Signal 'B' Too Many Pulses

What Does P0376 Mean?

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. When you see P0376 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0376 ?

Professional technicians report that the most common causes of this type of code include defective camshaft, crankshaft, and distributor position sensors. Following closely behind is mechanical distributor failure, which is common in high-mileage rear-wheel drive domestic applications. Faulty, damaged, or corroded wiring and electrical connectors are also contributed with failures of a similar nature. PCM failure is possible but rarely occurs.



How do you troubleshoot P0376 ?

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

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