The automobile engine code C1217 OBD2 precisely refers to the camshaft timing. In this case, if the cam timing is over-retarded, the engine light will be illumined and the code will be set. Power Steering Pressure Switch Malfunction In Key On, this DTC specifies the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC designates that the PSP input did not modify state. Routing wheel must be bowed during Key On, Engine Running Self-Test PSP switch or shorting bar spoiled SIG RTN circuit open PSP circuit opened to SIGRTN PCM damaged. The C1217 OBD2 precisely mentions to the camshaft timing.