PowertrainP0378

Serious

Severity: Serious - have it checked soon

Timing Reference High Resolution Signal B Intermittent/Erratic Pulses

27 brands affected · Generic SAE J2012 description.

Key terms: Catalytic converter: cleans the exhaust gases · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers ignition and engine-speed signals, including misfires and crankshaft or camshaft position sensors.

2Common causes

Worn or fouled spark plug
Faulty ignition coil
Vacuum or intake air leak
Low fuel pressure
Faulty crankshaft or camshaft position sensor
Low engine compression

3Can I drive?

Serious · drive with care

A failing crankshaft or camshaft sensor can cut the engine without warning, and a flashing check-engine light points to a misfire that can damage the catalytic converter. If the light is flashing, stop as soon as it is safe and have the car towed. Otherwise drive gently to a workshop; if it stalls or will not restart, have it towed.

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 27

Brand	Code	Description	System
Ashok Leyland CV	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
BAIC Motor	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Mercedes-Benz	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
BMW	P0378	Timing Ref High Res Signal B Intermittent/Erratic Pulses Brand	Powertrain
BYD	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Chery	P0378	Timing Reference High Resolution Signal B: Erratic Pulses Brand	Powertrain
Chrysler	P0378	correlation, nowe2 - kuwe Brand	Powertrain
Daewoo	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
DFFS	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
DFFX	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
DFXK	P0378	Timing Reference High Resolution Signal B: Erratic Pulses Brand	Powertrain
EOBD	P0378	Tidsreferens högupplöst signal 'B' intermittent/oregelbundna pulser Brand	Powertrain
Geely	P0378	Timing Reference High Resolution Signal B: Erratic Pulses Brand	Powertrain
GM	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Great Wall	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Hafei	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Honda	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
Hyundai	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
Isuzu	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
Land Rover	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Peugeot	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
Saab	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
MG (SAIC)	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Smart	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses SAE	Powertrain
Tata	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Toyota	P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses Brand	Powertrain
Volkswagen	P0378	Timing Reference High Resolution Signal B: Erratic Pulses 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.

5Related codes

Browse Pxxx codes or P037xx codes.