P-codes

[Teresa Singleton]

good morning, my son had a car w several P-codes... I was wondering if someone could tell me what these codes are and are they easily fixable?
P0136
P0335
P0720

 

[avisitor]

Diagnostic trouble codes are in the format of PXXXX (P followed by four digits)
And can be googled for more information.

P0136 ... O2 Sensor Circuit Malfunction Bank 1 Sensor 2
Indicates an issue in the wiring of the downstream O2 sensor

P0335 ... Crankshaft position sensor Circuit Malfunction
Indicates an issue with the wiring of the crankshaft position sensor

P0720 ... Output Speed Sensor Circuit Malfunction
Indicates an issue with the wiring of the output speed sensor

Since it looks like all three are wiring issues ...
I would be looking for wires or wire bundle that has been frayed or rubbing against something
Sometimes it is against exhaust manifold or some metal object