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Fault finding b1055

Can"t find code B1055

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2 Answers

Lost sound on 2005 impala. radio works. seems like amp problem.


Do you have base or up;level system ?

Table 1: Radio Features
Table 2: Cassette Features
Table 3: Compact Disc Features
Table 4: XM Advisory Messages
The radio receives power from the RADIO fuse in the junction block-right I/P. Ground is provided via G201 and G202. The radio is enabled/disabled by class 2 messages from the body control module (BCM). The radio routes audio signals from the digital radio receiver or the vehicle communication interface module (VCIM) to the speakers and/or amplifier when directed by class 2 messages.
The Entertainment System on this vehicle is configured with an AM/FM stereo radio with the radio data system (RDS) and either a cassette player or a CD player or both. CD and cassette. The uplevel system provides the customer with extended range speakers and an audio amplifier. Satellite digital radio (U2K) is available with uplevel systems.
The following list shows the radios available for this vehicle:
• Radio (ULO) - AM/FM Stereo, Cassette with RDS
• Radio (UNO) - AM/FM Stereo, CD and RDS
• Radio (UPO) - AM/FM Stereo, Cassette with CD and RDS .The complexity of the radio systems on these vehicle is mind blowing .

Your best bet take it to a GM dealer , has features you are unawear of .
DTC B1025, B1035, B1045, or B1055
When the radio is powered up, the radio supplies low level audio signals to the speakers. If the vehicle is equipped with an audio amplifier, the amplifier will boost the signal sent to the speakers.
DTC B1025 Audio Output Circuit
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, monitor the DTC Information for DTC B1025.
Does the scan tool indicate that DTC B1025 is current?

Jan 31, 2017 | Cars & Trucks

1 Answer

Having trouble with all my speakers except my twitters in a 2007 Saturn Outlook...what do I start with? Fuses are good


Speakers get power from the amp if your system has one or from the radio , if the tweeters work it's not a fuse problem . You like listen to your stereo loud . Blew a channel in the radio or amp ?
Take it and have it checked for DTC'S - diagnostic trouble codes
DTC B1025 01: Audio Output 1 Left Front Circuit Short to Battery
DTC B1025 02: Audio Output 1 Left Front Circuit Short to Ground
DTC B1035 01: Audio Output 2 Right Front Circuit Short to Battery
DTC B1035 02: Audio Output 2 Right Front Circuit Short to Ground
DTC B1045 01: Audio Output 3 Left Rear Circuit Short to Battery
DTC B1045 02: Audio Output 3 Left Rear Circuit Short to Ground
DTC B1055 01: Audio Output 4 Right Rear Circuit Short to Battery
DTC B1055 02: Audio Output 4 Right Rear Circuit Short to Ground

Each of the audio output channel circuits (+) and (-), at the radio and audio amplifier (if equipped) have a DC bias voltage that is one half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5 V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. This voltage will vary depending on what type of audio is being listened to, talk or music, and type of music, as well as the volume setting of the system. Low volume and talk settings will measure around 1V AC and less, where constant music may measure 3 V AC and slightly higher.
Do you know how to do DC voltage testing ?
Without Amplifier without UK6
Ignition OFF, disconnect the harness connector at the appropriate speaker.
Radio ON, test for 5.0-7.5 V between the signal circuit terminal A and ground.
? If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
? If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
Test for 5.0-7.5 V between the signal circuit terminal B and ground.
? If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
? If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
If all circuits test normal, replace the speaker.

Dec 25, 2016 | Saturn Outlook Cars & Trucks

1 Answer

My 2004 monte carlo stereo turns on but there is no sound? I have tried turning it off and the car off and i recieve cal err


Sorry dude but your going to have to take to the dealer !
DTC B1001 DTC B1025, B1035, B1045, or B1055 DTC B1259 DTC B1780
The radio does not function properly. The radio displays "CAL".
Install a scan tool. Turn ON the ignition, with the engine OFF. With the scan tool, perform the radio setup procedure. Refer to Radio Setup . Turn OFF the ignition. Turn ON the ignition, with the engine OFF.

Oct 20, 2016 | 2004 Chevrolet Monte Carlo

2 Answers

Staying in Limp Mpde with check engine light on.


first thing is to find the reason for the limp mode as it has been activated to protect the engine and transmission
do this by having the fault codes read ASAP then fixing the fault

Dec 06, 2015 | Cars & Trucks

1 Answer

Where do I find the codes?


You plug a OBD2 scan tool to your vehicle and that will read any fault codes. You can take that fault code and look it up online, many scan tools will tell you what they are

Jan 12, 2015 | Cars & Trucks

1 Answer

Help!!!cant find what fault code means


P4040 code that is a non specific code that could be either EGR control circuit malfunction or security shut down mode meaning that the security system is shutting off the spark and/or fuel.

Sep 20, 2014 | 2001 Daewoo Lanos

1 Answer

Vw fault codes 01284 01314 13265 can you explain please


we have a vw amarok 11 plate and the po 02299 fault code has come on. what should we check.

Jul 18, 2013 | Cars & Trucks

1 Answer

Abs fault light, engine management light, parkbrake fault (won't go off) DSC fault light, air suspension fault, 2003 Jaguar 3.5 SC V8, ah also discovered water ingress in boot, quite a lot!!, only fault...


try disconnecting the battery both leads and join them together for 5 mins and see what happens cannot find this fault code in teh jaguar OBD codes so consult with teh code reader manufacturers

Feb 08, 2011 | 2003 Jaguar XJ-Series

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