Hybspec

P1535

Wysoki

Code P1535 – Camshaft Control Circuit Malfunction (Bank 2) or PGM-FI Main Relay Fault (depending on the vehicle manufacturer).

Fault code P1535 can indicate a problem with the PGM-FI main relay or the camshaft control circuit. Most often, the culprits are low battery voltage, loose terminals, or a dirty VCT solenoid. Accurate diagnosis requires checking specific circuits depending on the vehicle make.

Symptoms

Engine may have starting problems, stall while driving, run rough, experience power loss, jerking, and the Check Engine light comes on. In the case of a main relay fault, there may be a complete lack of response when turning the key.

Possible causes

- Low battery voltage - Loose or corroded battery terminals - Faulty PGM-FI main relay - Faulty engine control module (ECM) – internal relay control circuit - Short or open circuit in the relay wiring harness - Contaminated or blocked VCT (variable cam timing) solenoid - Faulty camshaft position sensor

Affected systems

Układ elektrycznyUkład zapłonowyUkład paliwowyUkład zmiennych faz rozrządu (VVT)Moduł sterujący silnikiem (ECM)

Related codes

Does code P1535 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.