2001 Vovlo V70XC Rotor Sensor & Cam Sensor Fault code

Question

Two Codes coming up, P1174, P1171. symptoms: Car has slight hesitation and misses intermittently.

Tried suggested answer.
No noise in front timing cover. No constant misfire. No vacuum leaks at MAF or intake.
Fuel Pressure is high, 50-51 psi.
Cleared codes, drove 20 miles, codes came back.

Please advise.

Answer 1

P1174,P1171, Do you have noise at the front timing cover? If the cam and rotor sense was truly at fault you should have a constant misfire on the number on cylinder,The code you are recieving is a rational code,Look for engine vacuum leaks especially at the MAF,and the intake, the fuel pressure should also be check.at idle it should be at 35psi to 41 psi