PowertrainP052A

Caution

Severity: Caution - get it checked when you can

Built-in System Interface (BSI) failure

25 brands affected · Description from Toyota data.

Key terms: Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers vehicle speed, idle and oil-pressure control, charging-system voltage, and brake-switch circuits.

2Common causes

Carbon build-up in the throttle body
Faulty idle air control valve
Faulty vehicle speed sensor
Faulty charging system or weak battery
Wiring or connector fault

3Can I drive?

Caution · drive with care

Codes in this range include oil-pressure, brake-switch and charging-system voltage faults. If the oil-pressure warning light is on, stop the engine as soon as it is safe and do not drive until it is diagnosed. If the battery or charging warning light is on, drive straight to a workshop: the car can stall when the battery runs flat. For any other P05 code, have the car diagnosed promptly rather than continuing to drive.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 25

Brand	Code	Description	System
Ashok Leyland CV	P052A	Shift Solenoid F Control Circuit Range/Performance Brand	Powertrain
BAIC Motor	P052A	Intake camshaft position control error during cold start Brand	Powertrain
BYD	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
Chery	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
DFFS	P052A	Built-in System Interface (BSI) failure Brand	Powertrain
DFFX	P052A	Intake camshaft position control error during cold start Brand	Powertrain
DFXK	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
EOBD	P052A	Koudstart 'A' nokkenaspositie timing te vroeg bank 1 Brand	Powertrain
Geely	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
GM	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
Great Wall	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
Hafei	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
Hyundai	P052A	No description available	Powertrain
Isuzu	P052A	No description available	Powertrain
Land Rover	P052A	No description available	Powertrain
Maserati	P052A	Cold Start Intake Camshaft Position Timing Over-Advanced - Bank 1 Sensor 1 Brand	Powertrain
Mitsubishi	P052A	No description available	Powertrain
Nissan	P052A	No description available	Powertrain
Peugeot	P052A	No description available	Powertrain
Porsche	P052A	No description available	Powertrain
Saab	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
MG (SAIC)	P052A	Cold Start 'A' Camshaft Position Timing Over-Advanced Bank 1 Brand	Powertrain
Suzuki	P052A	Cold Start 'A' Camshaft Position Timing Over - Advanced (Bank 1) Brand	Powertrain
Toyota	P052A	Built-in System Interface (BSI) failure Brand	Powertrain
Volkswagen	P052A	Camshaft adj. bank 1 intake: cold-start timing not reached Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P052A and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P052A00	Intake camshaft position error when cold Brand	Powertrain

6Related codes

Browse Pxxx codes or P052xx codes.